Mining Information - 6/21/2004

LAND QUALITY SECTION BLASTING AAALYSIS WORKSHEET
C = denotes fields where input data is needed)
Permit No.*: 95-03
Permittee*: Radford Quarries of Boone
Mine Name*: Bamboo Raod Quarry
Blast Report No.*: 38
Peak Particle Velocity Check:
Date of Blast*: 06/21/04 Time of Blast*: 15:21
D Distance to closest offsite occupied structure (ft): D* = 1000.00
W Maximum pounds of explosives per delay (pounds): W* = 296.00
SD = Scaled Distance: SD = D/WAO.5 SD = 58.12
V = Peak Particle Velocity (inches per second): V = 160 (SD)A-1 .6 V = 0.24
(*max. limit in mining permit is: V = 1.0 ips)
Based on known distances from the blast to the seismograph and any additional location,
the expected vibration level can be estimated at the second location as follows:
V = Particle velocity measured by the seismograph (ips): V* = 0.05
DS = Distance from blast to seismograph (ft): DS* = 625.00
d = Distance from blast to second location (ft): d* = 1000.00
PPV = Theoretical peak particle velocity at the closest offsite occupied structure (ips):
PPV = V(DS/d)Al .5 PPV-- 0.0227
Airblast (Overpressure) Check:
P =Unconfined AirblastlOverpressure (psi): P=82(DIWAO.33)A-1.2 P=0.196085
To convert (psi) to (dBL): (P/2.gxloA-9)10gx2O P= 156.60
AB =Confined Airblast/Overpressure (dBL): AB = P (dBL) - 35 dBL (for quarry situation) AB= 121.60
(*rnax. limit in mining permit is: AB = dBL)

Explosives Column Check:
(this is a very approximate method based upon numerous assumptions;
specific densities may vary greatly depending upon the type and manufacturer
of the explosive products used in the shot; must consider each explosive used-,
refer to Dupont Handbook for actual SPD, otherwise use the following:)
Assumptions (per Ireco):
If "straight" emulsion is used, use SPD (specific density) = 1.20
If a "blend/slurry" is used, use SPD (specific density) = 1.25
If "straight" anfo is used, use SPD (specific density) = 0.85
Ratio between explosives:
Total pounds of Explos. #1* = 7792.00
Total pounds of Explos. #2* = N/A
Ratio between explosives = N/A
Average pounds of explosives used per hole (pounds)* 14 8. DOO
Breakdown of average pounds of explosives per hole due
Explosive #1 = 7792.00
Explosive #2 = N/A
SPD = Specific densities for each explosive:
SPD for Explos. #1* = 1.25
SIDD for Explos. #2* = N/A
HD Hole Diameter Used in Shot (inches): HD* = 4.00
LD Loading Density (pounds per foot of column): LD = SPD(.34)(HD)A 2
LD for Explos. #1 = 6.80
LD for Explos. #2 = N/A
Explosive column height for each explosive (feet):
Explos. #1 = 21.76
Explos. #2 = N/A
Total explos. column height = 21.76
Stemming height used in shot (feet)* = 6.00
Total height of explosive column(s) and stemming in the hole = 27.76
Total depth of hole denoted on the blasting report for the shot in question* = 26.00
Analysis Completed By: Date:

Explosives Column Check:
(this is a very approximate method based upon numerous assumptions;
specific densities may vary greatly depending upon the type and manufacturer
of the explosive products used in the shot; must consider each explosive used;
refer to Dupont Handbook for actual SPD, otherwise use the following:)
Assumptions (per Ireco):
If "straight' emulsion is used, use SPD (specific density) = 1.20
If a "blend/slurry"is used, use SPD (specific density)= 1.25
If "straight'anfo is used, use SPD (specific density) = 0.85
Ratio between explosives:
Total pounds of Explos. #1 7792.00
Total pounds of Explos. #2* = N/A
Ratio between explosives = N/A
Average pounds of explosives used per hole (pounds)* = 139.60
Breakdown of average pounds of explosives per hole due to ratio:
Explosive #1 = 7792.00
Explosive #2 = N/A
SPD = Specific densities for each explosive:
SPDforExplos.#I*= 1.25
SPD for Explos. #2* = N/A
HD Hole Diameter Used in Shot (inches): HD* = 4.00
LD Loading Density (pounds per foot of column): LD = SPD(.34)(HD)A2
LD for Explos. #1 = 6.80
LD for Explos. #2 = N/A
Explosive column height for each explosive (feet):
Explos. #1 = 20.53
Explos. #2 = N/A
Total explos. column height = 20.53
Stemming height used in shot (feet)* = 6.00
Total height of explosive column(s) and stemming in the hole = 26-53
Total depth of hole denoted on the blasting report for the shot in question* = 26.00
Analysis Completed By: Date:

D
.el

Division: Land I
Supervisor: Franci
Employment Status:
(X) Permanent
Probationary
Trainee
T
Land Qu _t Section
James D. Simons
Purpose of praisal:
Final
Probationar
Transfer/Sep ation
Trainee Progression
Date work plan reviewed with employee: —/
Date interim performance review conducted: — /
Date final performance appraisal conducted: —/
12-A-3

MINING CHECKLIST FOR ROUTING
'0
ApplicanVo Name: 'j
4fr-q- Mct Name:
Applic./Permit No.: County: Date Received:
V- V
Reviewer: )A JX"-- River baoin Name:
V
El New 11 Renewal El Modification (inoide permit boundarico)
El Modification (outoide permit boundaric5) 0 Tra ri!5fe r El Relcaoc
[I Partial Releaoc 11 Additional Information El Fee Needed: $_
0 Fee Received: $
n
=rfic�,e(2 �corriplcte copico; attach the "LO5 Regional
Office Mining Application Review Checkliot" to one copy and attgich �� the Ma anci PAQ
"Mirlime Application Review Form" to the other copy; ocrid both copie to the Regional Engineer)
Date: Routed Keo'd
11 Divi5ion of Water Keoourceo Date: Routed F Keo'ci
11 NC Wildlife Reoourceo Commiooion Date: Routed Rec"d
11 U5 Fioh & Wildlife 5ervice Date: Routed Rec"d
(Only new applicationo arl6i mojification requeoto that aJJ lanJ to the permit)
Fleaoc route firot 312ameo of the application
and
any location
mapo to:
11 Divioion of Farko & Recreation
Date:
Routed
R6G'd
11 NC Geological 5urvey 5ection
Date:
Routed
R 6 c' J
(only neWqppljGatjon!5,qMCj MoCiffloqtjon rcopeot-, thatqJd
larici to the permit)
Z Divioion of Archiveo & Hiotor-y
Date:
Kouted
Kec'd
(Only new applicationo)
El Other:
Date:
Routed
Rec"d
**5uoperloc Pate for Commento: xl)�Y (no later than 25 dayo
from receipt) I
11,�Icaoe note the followine:

Radford Quarries of Boone,, Inc.
5605 Bamboo Rd P.O. Box 2071
Boone, NC 28607
Rock Dilt Topsoil 828-264-7008 (p) 828-264-5247 (f)
June 29, 2004
Judith Wehner
Assistant State Mining Specialist
Land Quality Section
DENR
1612 Mail Service Center
Raleigh, NC 27699
Dear Judy:
RIECIEWED
JUN 3 0 2004
LAND QUALITY SECTION
Per our recent telephone and email conversations, I am forwarding to you a report on the fly
rock incident of June 21, 2004. In addition to my own assessment of the situation to follow in
the body of this letter, I have included the following:
1. A memo from Bobby Shaver of Orica USA, Inc. (the third party analysis).
2. A map prepared by David Ramsey to mark the location of both blasts.
3. A seismograph reading taken by Raymond Cecile.
4. A blasting report prepared by Harry Ramey, blaster of the detonation in question.
As I indicated during our telephone conversation, we loaded a production shot and a large
boulder, which was not easily accessible. On the attached map, the production shot is indicated
as Blast Hole #1 and the boulder shot is indicated as Blast Hole #2. The production shot was
located in the far comer and in the bottom of the pit while the boulder was located on the
opposite high wall. For a fly rock to travel to the High Country Roundup from the production
shot, it would need to have sufficient velocity to overcome the high wall barrier and travel
approximately 1500 feet while a fly rock from the boulder would only need to overcome the tree
level barrier and travel 1000 feet. Based on distances to the Roundup and heights of barriers, it
seems far more likely that the fly rock came from the boulder. Further, as Bobby Shaver has
indicated, we expect that the stemming washed out of the boulder due to rain, and that this
resulted in fly rock. There was also a trail of rock around the boulder in the direction of the
Roundup but no such trail of rock was apparent around the production shot. To my knowledge,
we have never before had any fly rock leave our pen-nitted boundaries so I believe that our
production shots are controlled and directed in a consistent manner.
As future precautionary and proactive safety measures, we plan not to blast any boulders
again and will instead break the boulders up with hydraulic hammers. We will also use 1/2 inch
Oean stone for stemming in all future blasts.

We have spoken to Virgil Freeman who owns the building complex that rents to High
Country Roundup, and we have agreed to promptly reimburse him for all repair expenses
incurred. Following the blast, I personally visited each business in the complex to determine if
anyone was injured or if any property was damaged. Fortunately, no one was injured, and to
date, the only report of damage to property was the High Country Roundup building.
Please note that we have almost completely processed the production shot and are going to
be out of rock to crush by the end of this week. We are a small business, and we cannot afford to
go very long without rock to crush and generate income. Please help us rectify this situation so
that we may resume our blasting as soon as possible.
If you need any further information, you may reach me at 828-264-7008, by email
[e-mail], or by cellular phone at 919-417-2776.
Sincerely,

RECEWED
JUN ao 2114
Memo
TO: Judith Wehner, Assistant Mining Specialist, NCDENR, Division of Land Quality
Frorm Bob Shaver
CC: D. J. Cecile, PerTnit Contact
Date— 6/27/2004
Re: Fly Rock Incident
On Monday June 21, 2004 fly rock occurred during a shot at the Radford Quarlies of Boone, Inc.
quarry #CA122 on Bamboo Road in Boone, North Carolina. Two or three rocks traveled approximately
996 feet and struck the High Country Round Up Building. The rocks were between the size of a softball
and basketball. Several smaller rocks of the size I 1/2inch minus struck the ground at various places around
the building.
The shot consisted of 53 production holes and 3 boulder holes. The production shot appeared to be
very well controlled while the fly5Dck pretty clearly came from the boulder. The production shot was
approximately 1700 feet rom t e I High Country Round Up Building. This shot was detonated in a direction
away from this business and rectly toward a 150 to 200 feet high wall. The boulder was on the other side
of the quarry near the top of ie pff-'and did not have a large high wall banier shielding it. The boulder had
three holes that were each loaded with 1/2pound booster.
After reviewing the incident With the blaster in charge, Harry Ramey, I am certain the fly rock came from
the boulder. He loaded the boulder'And-gt-6mmed it with dirt because he could not get stone up to it. After
loading the boulder, he loaded the production. One hour prior to firing the shot, it started raining. It
continued raining until after the shot was fired. I feel the rain washed out the dirt stemming leaving the
explosives unconfined.
The contributing factors were
Stemming the boulder with dirt.
2. Rain washing out the dirt stemming.
If they had used stone, it would have locked in and would have better confined the explosives.
Danny Cecile, the company president, has agreed with Virgil Freeman, owner of the High Country
Round Up to repair all damages caused by this incident. I recommend that they not load boulders in the
future and that they always use 78m (% inch minus) stone to stem all holes in the future. Boulders can be
dealt with more safely using hydraulic breaker hammers. I have been involved in the drilling and blasting
program at the Bamboo Quarry for 15 years and this is the first fly rock incident that I am aware of. Danny
Cecile has always taken the blasting very serious because of the location of his neighbors and always errs
on the side of conservative. If you have any further questions you can reach me at 704-239-5161.
Bob Shaver, Technical Sales Representative, Orica USA Inc.

EILASTING REPOR7
COMPANY fA d F)
NOT
LMATION DATE
4QQ�� �10PERATION At
TYPE SHOT —4-"���TIME OF BLAST
U CX7
31,2nd
IVA 7MAL BLASTED
DRrLLM PATTER -N DATA
NO. OF HOLES
EXPLOSIVES
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AOLE DEP-vvi 17 .1
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oil
SPACING B�d
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TEMM(wo DEpT"
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TOTAL EXPLoStVF
TOTAL CU.YD- OF ROCK
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W-Wn%G CIRCUIT DATA.
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MISCELLANEOUS DATA
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SE(SOFOGRAPH DATA
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WCF- MW BLAST
Ysls a y X-Aj
ATOR,S NAME
P 1-014E: 828-264-7008 RADFORD QUARRIES OF BoOf4E, fKC FAX: [phone]

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06.18.2004 PAGE: 1
A BUSINESS UNIT OF ORICA I �NC. Go
- SHIPPING RECORD/DELIVERY D�0
I
D/T NO: 0020429978 ORDER NO: 284614 SHIP DATE:
PLANT: Gold Hill,NC OUSA FEDERAL LICENSE: 1NC159203K12370
PLANT #: 0870
CUST.FED.LICENSE: CUST ORD NO: 1251 po#
SHIP TO: SOLD TO:
RADFORD QUARRIES OF BOONE RADFORD QUARRIES OF BOONE
PO Box 2071 Po Box 2071
BOONE NC 28607 BOONE NC 28607
USA USA
PHONE [phone] PHONE [phone]
ITEM PRODUCT DESCRIPTION CL SLOC ORDER ORDER QTY QTY PRODUCT
NO /SHIP SHIP USED RETD BATCH #
QTY PKG
0010 EXEL Comectadet 12M 42MS (40 FT) 5D
15
1
51114546
0001 mool
15
15
0
0
17MY04B4
0020 EXEL HAND (X-409) 9M 25/500 (30')- D
70
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70
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0001 mool
70
1
10MY04B4
0030 SUPER PRIME 8LU1/2 LB CAST PRIMERS 7H 70 70 5111636�
70 70
0001 M004 70 70 14MA04UI
0040 APEX GOLD 2171 1 1 51101749
0090 delivery charge 1 0 51111978
1 1
CL
B
D
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EXPLOSIVE TYPE
BLASTING AGENT
DETONATOR
HIGH EXPLOSIVE
PICK LIST TEXT

06.18.2004
A BUSINESS UNIT OF ORICA US INC.
SHIPPING RECORD/DELIVERY DOCUMENT -
D/T NO: 0020429978 ORDER NO: 284614 SHIP DATE: 06.21.2004
ITEM PRODUCT DESCRIPTION CL SLOC ORDER ORDER QTY QTY PRODUCT
NO /SHIP SHIP USED RETD BATCH #
QTY PKG
PAGE: 2
LOADED BY (SIGNATURE):
v
RECEIVED DATE: BY (SIGNATURE):
v zali/
RECEIVED IN FULL AND ON TIME BY (SIGNATURE):

n Vert Long
PV 44? 0.0312 0.0406 in/s
C Freq __�2 24 30 Hz
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Accel 0.0497 0.0282 0.0381 g
Pk Di5p __0.00021 0.00020 0.00018 in
P IV S in/s
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PSPL .1. 1 I.S dB(L� at 0.991 Sec
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NCDENR
North Carolina Department of Environment and Natural Resources
Division of Land Resources
James D. Simons, P.G., P.E. Land Quality Section Michael F. Easley, Governor
Director and State Geologist William G. Ross Jr., Secretary
June 24, 2004
CERTIFIED MAIL
RETURN RECEIPT REQUESTED
NOTICE OF VIOLATION OF MINING PERMIT
Mr. Danny Cecile
Radford Quarries of Boone, Inc. 3?66
P.O. Box 2071
Boone, North Carolina 28607
RE: Mining Permit No. 95-03
Bamboo Road Quarry
Watauga County
Watauga River Basin
Dear Mr. Cecile:
This is to inform you of a violation of Mlining Permit No. 95-03 issued to
Radford Quarries of Boone to operate the Bamboo Road Quarry in Watauga
County.
On June 21, 2004, the Land Quality Section's Winston-Salem Regional
Office (WSRO) was notified of a fly rock incident that occurred at the above
referenced mine on June 21, 2004, which resulted in rock being thrown outside your
permitted area. Therefore, this incident constitutes a violation of Operating
Condition No 8G o.f Mining Permit No. 95-03 which governs the control of fly rock at
this mine.
The following actions m.ust be taken'to correct this violation:
A. Immediately. cease further use of explosives at the Bamboo Road
Quarry.
1612 Mail Service Center, Raleigh, North Carolina 27699-1612 - 919-733-4574 / FAX: [phone]
512 North Salisbury -Street, Raleigh, North Carolina, 27604
An Equal Opportunity � Affirmative Action Employer — 50% Recycled \ 10% Post Consumer Paper

Certified Mail
June 24, 2004
Mr. Cecile
Page Two
B. Submit in duplicate to the Department, within 10 days following your
receipt of this Notice, a complete blast investigation report prepared by a
third party consultant. Said report shall contain, but not be limited to, the
following:
a) blast repo rts/record s,
b) a scaled map showing the exact location of the June 21, 2004 blast
and the distances to and locations of the fly rock and offsite
damage (if any),
c) actions to be taken by your corporation to repair any damages,
d) probable cause(s) of the fly rock,
e) description of the blasting procedures employed at the time of the
incident, and
f) what changes will be made in procedures to ensure that fly rock will
not exit the permitted and guarded area in the future.
You will be notified if the above investigative report meets with the approval
of the Department. Should the report not meet with Department approval, you will
be notified of the deficiencies.
Failure to take the corrective actions specified above may result in the
assessment of a civil penalty against your corporation. If a civil penalty is assessed,
the amount may be up to five hundred dollars ($500.00) for each day of violation,
beginning with the date of your receipt of this Notice of Violation (N.C.G.S. 74-64).
Other enforcement actions may include seeking an injunction or revoking your
mining permit.
The responsibility for understanding and complying with the conditions of
your mining permit rests with you.

0
CERTIFIED MAIL
June 24, 2004
Mr. Cecile
Page 3
Please do not hesitate to contact Mr. Floyd Williams, State Mining Specialist, at (919)
733-4574 or me at [phone] regarding any questions you might have about this matter.
Very truly yours,
)aImes D. Simons, PG, PE
JDS/jw
cc: Mr. Floyd Williams, PG
Mr. Matt Gantt, PG

Re: [Fwd: Radford Quarry Blasting Complaint, Wataug...
Subject: Re: [Fwd: Radford Quarry Blasting Complaint, Watauga County]
From: Floyd Williams <[e-mail]>
Date: Tue, 22 Jun 2004 13:09:42 -0400
To: Judy Wehner <[e-mail]>
Judy,
I think a flyrock NOV is needed.
Judy Wehner wrote:
For your info. Do you want a flyrock NOV sent?
------- Original Message --------
Subject:Radford Quarry Blasting Complaint, Watauga County
Date:Mon, 21 Jun 2004 16:46:53 -0400
From:Brooks Cole <Brooks.Cole(&,ncmail.net>
Organization:NC DENR - Division of Land Resources, Land Quality Section
ToJudy Wehner <Judy.Wehner(a&,ncmail.net>
CC:Matt Gantt <Matt.Gantt(&,ncmail.net>
Judy, we just received a blasting complaint on the Bamboo Road Quarry i
Watauga County. Supposedly a rock the size of a cantalope was blown
through the side of someones home. No one was injured but rock went
everywhere. I called the Quarry and spoke to Danny Cecile and he said
they were blasting a bolder in the pit and it blew out and they had a
few stones leave the pit area. Danny said he had already spoken to the
landowners and has made arrangements for the appropriate repairs.
Stones hit a building and a couple of cars. He said they have the
blasting records and will be glad to forward them if requested. The
building damaged was not a home, but a place called "The Round -Up".
Contact Danny if you need additional info. Thanks! Brooks Cole
Brooks Cole
NC DENR Winston-Salem Regional Office
Division of Land Resources, Land Quality Section
585 Waughtown Street
Winston-Salem, NC 27107
Voice: [phone] ext 245
FAX: [phone]
1 of 2 6/22/2004 2:21 PM

Re: [Fwd: Radford Quarry Blasting Complaint, Wataug...
Floyd Williams, PG, CPG, CPM
State Mining Specialist
Land Quality Section
Division of Land Resources
NC Department of Environment and Natural Resources
1612 Mail Service Center
Raleigh, NC 27699
Telephone: [phone]
Fax: [phone]
2 of 2 6/22/2004 2:21 PM

Radford Quarry Blasting Complaint, Watauga County
0
Subject: Radford Quarry Blasting Complaint, Watauga County
From: Brooks Cole <[e-mail]>
Date: Mon, 21 Jun 2004 16:46:53 -0400
To: Judy Wehner <[e-mail]>
CC: Matt Gantt <[e-mail]>
Judy, we just received a blasting complaint on the Bamboo Road
Quarry in Watauga County. Supposedly a rock the size of a
cantalope was blown through the side of someones home. No one was
injured but rock went everywhere. I called the Quarry and spoke to
Danny Cecile and he said they were blasting a bolder in the pit and
it blew out and they had a few stones leave the pit area. Danny
said he had already spoken to the landowners and has made
arrangements for the appropriate repairs. Stones hit a building
and a couple of cars. He said they have the blasting records and
will be glad to forward them if requested. The building damaged was
not a home, but a place called "The Round -Up". Contact Danny if
you need additional info. Thanks! Brooks Cole
Brooks Cole
NC DENR Winston-Salem Regional Office
Division of Land Resources, Land Quality Section
585 Waughtown Street
Winston-Salem, NC 27107
Voice: [phone] ext 245
FAX: [phone]
1 of 1 6/22/2004 9:13 AM

From: DJ Cecile <[e-mail]>
Date: Mon, 21 Jun 2004 21:07:14 -0400 (EDT)
To: Judy Wehner <[e-mail]>
Hey Judy.
I don't know if you've heard yet but we had fly rock today during
our
blasting. Brooks spoke to my dad and told him you would probably
request
blasting reports etc. I know you'll have to send a formal letter
but if
you'll email me what you need I'll get it to you asap.
BTW, did Ramsey send in the final review? Where do we stand?
Thanks.
DJ
D. J. Cecile
208 Physics Bldg.
Box 90305
Duke University
Durham, NC 27708
[phone]
I of 1 6/22/2004 9:31 AM

Page 2
8� Blasting
The operator shall monitor each blast with a seismograph located at a distance
no farther than the closest off site regularly occupied structure not owned or
leased by the operator. A seismographic record including peak particle velocity, air
overpressure, and vibration frequency levels shall be kept for each blast (except as
provided under Sections B. and D. of this permit). The following blasting conditions shall
be observed by the mine operator to prevent hazard to persons and adjacent property
from surface blasting:
A. Ground Vibration With Monitoring:
In all blasting operations, the maximum peak particle velocity of any component
of ground motion shall not exceed Figure 1 (below) at the immediate location of
any regularly occupied building outside of the permitted area such as a dwelling
house, church, school, or public, commercial or institutional building.
14
0
E
n
r -
I W.
2-0
i's
1.0
0.3,
01
O's
a.s
0,4
0.3
012
0.1
2 idiisec
0.76 imisec
ic
10-0
2.0
1-5
i.0
0.9
U-7
0.5
0-5
0.4
0-1
1 4 lu 20 JO 100
Mast Ifibration Firequency, Hz
Figure 1 Altemarive blastingfevefcrhtena
(Source 17) Odif, ed from figure B- I . S drelu of Mines R 8�50 7.�r

13
C.
X
Ground Vibration Without Monitoring:
In the event of seismograph malfunction or other condition which prevents
monitoring, blasting shall be conducted in accordance with the following
formulas-,
W = (D/D S)2 Ds = D 1/2
W
V = 160(Dr,)-' -6
Page 3
W = Maximum charge weight of explosives per delay period of 8.0 milliseconds
or more (pounds).
D = Distance from the blast site to the nearest inhabited building not owned or
leased by the mine operator (feet).
Dr, = Scaled distance factor.
V = Peak Particle Velocity (inches per second).
The peak particle velocity of any component shall not exceed 1.0 inch per
second, for the purposes of this Section.
Air blast With Monitoring:
Air blast overpressure resulting from surface blasting shall not exceed 129
decibels linear (dBL) as measured at the immediate location of any regularly
occupied building not owned or leased by the operator outside of the permitted
area such as a dwelling house, church, school, or public, commercial or
institutional building, unless an alternate level based on the sensitivity of the
seismograph microphone as specified below is being used:
Lower Frequency Limit of Max Level,
Measuring System, in Hz in dBL
0. 1 Hz or lower -flat response
134 peak
2.0 Hz or lower -flat response
133 peak
6.0 Hz or lower -flat response
129 peak
Air blast Without Monitoring:
In the event of seismograph malfunction or other condition which prevents
monitoring, blasting shall be conducted in accordance with the following
formulas:
U = 82 (D/WO .33)-1.2

To convert U (psi) to P (dBL):
Page 4
P = 20 x log (U/2.9xl 0-9)
Confined Air blast/Overpressure (dBL)
for quarry situation:
A = P - 35
U = Unconfined air overpressure (pounds per square inch).
W = Maximum charge weight of explosives per delay period of 8.0 milliseconds
or more (pounds).
D = Distance from the blast site to the nearest inhabited building not owned or
leased by the mine operator (feet).
P = Unconfined air overpressure (decibels).
A = Air blast or air overpressure for typical quarry situations (decibels).
The air blastioverpressure shall not exceed 129 decibels, for the purposes of this
Section.
E. Record Keeping:
The operator shall maintain records on each individual blast describing: the total
number of holes; pattern of holes and delay of intervals; depth and size of holes;
type and total pounds of explosives; maximum pounds per delay interval; amount
of stemming and burden for each hole; blast location; distance from blast to
closest offsite regularly occupied structure; and weather conditions at the time of
the blast. Records shall be maintained at the permittee's mine office and copies
shall be provided to the Department upon request.
F. Excessive Ground Vibration/Air blast Reporting:
If ground vibration or Air blast limits are exceeded, the operator will immediately
report the event with causes and corrective actions to the Department. Use of
explosives at the blast site that produced the excessive reading shall cease until
corrective actions approved by the Department are taken. However, blasting
may occur in other approved areas within the permitted boundary. Authorization
to blast at the blast site may be granted at the time of the verbal reporting of the
high ground vibration or high air blast reading if the circumstances justify verbal
approval. Failure to report will constitute a permit violation.
G. Flyrock Prevention:
The operator shall take all reasonable precautions to ensure that flyrock is not
thrown beyond areas where the access is temporarily or permanently guarded by
the operator. Failure to take corrective measures to prevent flyrock and
repeated instances of flyrock shall be considered a violation of the Mining Permit.

Page 5
H. Flyrock Reporting:
Should flyrock occur beyond the permitted and guarded areas, the operator shall
immediately report the incident to the Department. Further use of explosives on
the mine site shall be suspended until the following actions have been taken:
1 A thorough investigation as to the cause(s) of the incident shall be
conducted.
2. A report detailing the investigation shall be provided to the Department
within 10 days of the incident. The report shall, at a minimum, document
the cause(s) of the incident along with technical and management actions
that will be taken to prevent further incidents. The report shall meet with
the approval of the Department before blasting may resume at the mine
site.
Studies:
The operator shall provide to the Department a copy of the findings of any
seismic studies conducted at the mine site in response to an exceedence of a
level allowed by these blasting conditions. The operator shall make every
reasonable effort to incorporate the studies' recommendations into the
production blasting program.
J. Notice:
The operator shall, when requested by the Department, give 24-hour advance
notice to the Land Quality Section Regional Office prior to any blast during a
period for which notice is requested.

--rimeter of the
C. Any over 7den cut slopes along the
existing -t area that were excavat, prior to—the date
of issuance of this permit shall be provided with the
slopes and safety benches required by Operati ng
Condition No. 6.B. above within one (I) year of the
issuance of this pgrmit.
7. Surface Drainage
The affected land shall be graded so as to prevent
collection of pools of water that are, or likely to become,
noxious or foul. Necessary structures such as drainage
ditches or conduits shall be constructed or installed when
required to prevent such conditions.
8. Blastincr
The operator shall provide to the Department a copy of the
findings of any seismic studies conducted at this facility.
The operator shall make every reasonable effort to
incorporate the studies' recommendations into the production
blasting program.
The following blasting conditions shall be observed by the
operator to prevent hazard to persons and adjacent property
from thrown rock or vibrations:
A. In all blasting operations, except as hereinafter
otherwise provided, the maximum peak particle velocity
of any component of ground motion shall not exceed 1.0
inch per second at the immediate location of any
building outside of the permitted area regularly
occupied by human beings such as dwelling house,
church, school, public building, or commercial or
institutional building outside of the permitted area.
The opgrator shall monitor each blast with a
seismograph.
B. Airblast overpressure shall not exceed 128 decibels
linear (DBL) as measured at the immediate location of
any regularly occupied building outside of the
permitted area such as any dwelling house, church,
school, public building, or commercial or institutional
building.
C. The operator shall take all reasonable precautions to
insure that flyrock is not thrown beyond the permitted
boundaries. Should flyrock occur beyond the permitted
boundaries or the levels in Items A and B above are
exceeded, the operator shall report the incident to the
Department immediately and further use of explosive at
the site shall be immediately suspended until the
following actions have been taken:

a
Page 7 of 11
1. A thorough investigation as to Lue cause(s) of the
incident shall be conducted.
2. A satisfactory report detailing the investigation
shall be provided to the Department within 10 days
of the incident. Said report shall, at a minimum,
document the cause(s) of the incident along with
technical and management actions that will be
taken to prevent further incidents.
The report shall meet with the approval of the
Department before blasting may resume at the site.
Failure to take corrective measures to prevent flyrock
and repeated instances of flyrock shall be considered a
violation of this permit.
D. The operator shall maintain records on each individual
blast describing: the total number of holes; pattern
of holes and delay of intervals; depth and size of
holes; type and total pounds of explosives; maximum
pounds per delay interval; amount of stemming and
burden for each hole; and blast location. Records of
all seismograph recordings made for each blast at the
site shall also be maintained. Records shall be
maintained at the permittee's mine office and copies
shall be provided to the Department upon request.
E. The operator shall, when requested by the Department,
give 24 hour advance notice to the Land Quality Section
prior to any blast during a period for which notice is
requested.
High wall Barrier
A.
A physical barrier consisting of a four (4) strand,
four (4) foot high barbed wire fence (wi�, �-each---strand
approximately one foot apart attached.,to' 4 foot by 4
foot wood posts, or approved alternat*ive�,:-15--foot
spacings) shall be installed within one (1) year of the
issuance of this permit in the location indicated on
the revised Mine Map dated July 29, 1993. Said fencing
shall be maintained at all times around the perimeter
of any highwall to prevent inadvertent public access.
Highly visible warning signs shall be attached to the
fence at 50 foot intervals.
The existing three (3) strand barbed wire fence,
located along the top edge of the current pit area,
shall be maintained until the—fene-ing noted in
operating Condition No. 9 . x,above has been properly
installed as required by this� �permit.
C. A minimum 20 foot wide horizontal safety bench shall be
provided at the junction between the top of rock and
the toe of the overburden cut slope.