Mining Incidents

Koehler Quarry: 40 MSHA citations Metal/Non-Metal

Controlled by Gary T Baker
Beaverton, Washington County, OR  ·  Abandoned
MSHA Mine ID: 3500014

Koehler Quarry has $3K in proposed MSHA penalties and $20 outstanding across 0 contested dockets, plus health sampling and the full incident record.

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Fatalities
0
Total incidents
31
Years on record
1983–2000
Latest incident
Jun 2000
Compliance record
MSHA citations since 2000
40
citations
5
significant & substantial
$3,030
proposed penalties
$3,010
paid to date
99% of proposed penalties paid to date, a $20 gap.
Source: MSHA violations data, updated weekly.
Inspection activity
MSHA inspections since 2000
30
inspections on record
570
inspection hours
n/a
citations per 100 inspection hours
This rate is recorded citations divided by MSHA inspection hours, per 100 hours. It reflects inspection effort, not mine size or production.
Rate withheld: 570 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections data, updated weekly.

Koehler Quarry has $3K in proposed MSHA penalties and $20 outstanding across 0 contested dockets.

Penalty disposition
Differences between proposed and paid penalties reflect both settlements and conference reductions and amounts still owed. Outstanding is the balance currently owed.
$3K
proposed penalties
$3K
current assessed
$3K
paid to date
$20
outstanding
39 assessments are final orders; 0 contested dockets.
As of the most recent assessment on 2010-02-11.
Source: MSHA assessed-violations and conference/litigation data, updated weekly.
Violation severity profile
Shares are computed over citations that carry the MSHA gravity and negligence coding; a small share of records are uncoded.
12.5%
significant & substantial
0.0%
high negligence or reckless
15.0%
reasonably likely or greater
50.0%
permanently disabling or fatal if injury occurs
Negligence coding: 0.0% none, 30.0% low, 70.0% moderate, 0.0% high, 0.0% reckless.
Source: MSHA violations gravity and negligence coding, updated weekly.
Health sampling
A sample is a point in time compliance measurement, not an individual exposure history. These figures describe MSHA sampling records and do not establish causation or personal dose.

Metal and nonmetal contaminants (personal samples)
Many samples are screening measurements of substances with no applicable exposure limit; they are counted as samples but excluded from every over-limit figure. Over-limit shares use only limit-tested samples.

Last sampled: 2009-06-24, 17 years ago
0%
of limit-tested samples over the exposure limit
17
samples
2
limit-tested
Most sampled contaminants
  • Unlisted Particulate, respirable, <1% Qtz12
  • Respirable dust, <.1mg3
  • Quartz, respirable, >1% Qtz2
Show the individual readings (17)
Date Contaminant Concentration Limit Conc / limit Occupation
2009-06-24 Unlisted Particulate, respirable, <1% Qtz 0.51 Crusher Oper/Worker
2009-06-24 Unlisted Particulate, respirable, <1% Qtz 0.12 Crusher Oper/Worker
2009-06-24 Unlisted Particulate, respirable, <1% Qtz 0.24 Truck Driver
2006-06-08 Unlisted Particulate, respirable, <1% Qtz 0.44 Crusher Oper/Worker
2006-06-08 Unlisted Particulate, respirable, <1% Qtz 0.51 Cleanup Man
2006-01-18 Unlisted Particulate, respirable, <1% Qtz 0.18 Laborer, Bullgang
2006-01-18 Unlisted Particulate, respirable, <1% Qtz 0.32 Laborer, Bullgang
2005-03-29 Respirable dust, <.1mg 0 Truck Driver
2005-03-29 Unlisted Particulate, respirable, <1% Qtz 0.19 Crusher Oper/Worker
2005-03-29 Unlisted Particulate, respirable, <1% Qtz 0.39 Cleanup Man
2005-03-29 Respirable dust, <.1mg 0 Truck Driver
2002-03-20 Unlisted Particulate, respirable, <1% Qtz 0.3 Laborer, Bullgang
2002-03-20 Respirable dust, <.1mg 0 Truck Driver
2002-03-20 Unlisted Particulate, respirable, <1% Qtz 0.46 Crusher Oper/Worker
2001-01-18 Quartz, respirable, >1% Qtz 0.49 2.66 0.18 Crusher Oper/Worker
2001-01-18 Quartz, respirable, >1% Qtz 0.25 1.59 0.16 Truck Driver
2001-01-18 Unlisted Particulate, respirable, <1% Qtz 0.35 Cleanup Man
Source: MSHA respirable dust, quartz, and noise sampling records, updated weekly. Metal/nonmetal contaminant figures come from MSHA's Personal Health Samples and Area Samples files (public record), updated weekly.

Koehler Quarry recorded 0.00 reportable injury cases per 100 full-time workers in 2009.

Injury rate, 2009
This rate is reportable injury cases per 100 full-time-equivalent workers per year, computed as 200,000 times cases divided by MSHA operator-reported employee-hours. Cases are injuries MSHA graded degree 01 through 07; accident-only events that hurt no one are excluded, and so are contractor injuries, whose hours do not attach to a single mine. Rates begin in 2000, when quarterly employment reporting starts, and are withheld below 20,000 hours in a year.
0.00
total case rate
0.00
days-away rate
0.000
fatality rate
No reportable injury cases in any year shown. Employee-hours were reported in each of those years, so these are true zeros rather than missing data. Citations, listed in the compliance record above, are inspector-found violations and are counted separately from worker injuries.
Below average. The US metal and nonmetal mining average was 2.82 and the all-US-mining average was 3.36 cases per 100 workers.
In Oregon, metal and nonmetal mining averaged 2.00 cases per 100 workers that year.
Under 100,000 employee-hours were reported that year, so a single case moves the rate by two or more. Read the figure as approximate.
Year total case rate days-away fatal
2009 * 0.00 0.00 0.000
2008 * 0.00 0.00 0.000
2007 * 0.00 0.00 0.000
2006 * 0.00 0.00 0.000
2005 * 0.00 0.00 0.000
2004 * 0.00 0.00 0.000
2003 * 0.00 0.00 0.000
2002 * 0.00 0.00 0.000
* Fewer than 100,000 employee-hours that year; the rate is less stable.
Source: injury cases from MSHA accident and injury records; employee-hours from MSHA quarterly employment reports. Rate is cases per 100 full-time-equivalent workers, operator employees only.
Ownership history
  1. L H Cobb-Crushed Rock 1950 to 1984
  2. Cobb Rock Inc 1985 to 1986
  3. Cobb Rock Inc 1986 to 1987
  4. Cobb Rock Inc 1987 to 1987
  5. Northwest Aggregates 1988 to 2009
  6. CalPortland Company 2009 to 2010
  7. Baker Rock Resources 2010 to present
Source: MSHA controller and operator history, updated weekly.
Workforce and production
Year Employees
2010 7
2009 23
2008 27
2007 29
2006 29
2005 28
2004 32
2003 29
2002 29
2001 29
2000 30
Source: MSHA quarterly employment and production, updated weekly.

Koehler Quarry sits in Washington County, Oregon, where the Census mining category is 0.0% of county employment.

Local economic context
County figures come from the US Census Bureau's American Community Survey, 5-year pooled estimates, so the 2023 vintage covers 2019 through 2023. The Census category is 'mining, quarrying, and oil and gas extraction', which is broader than MSHA jurisdiction and includes oil and gas workers no mine employs. These figures describe the surrounding county, not this mine, and are not a factor in any specific incident.
Washington County, Oregon · Population 600,266
0.0%
Mining share of county employment
$104,434
Median household income
Source: US Census Bureau, American Community Survey 2023 5-year estimates.
Quarterly safety rates
Citations per million reported employee-hours. Rates begin in 2000, when MSHA's quarterly employment data starts; earlier incidents are counted but cannot be rate-adjusted. Quarters under 100,000 reported hours are greyed: too few hours for a stable rate.
Citations per million employee-hours, as reported to MSHA
Quarter Hours worked Citations S&S Per 1M hrs
2010 Q1 3,697 2 0 541.0
2009 Q4 6,499 0 0 0.0
2009 Q3 7,723 0 0 0.0
2009 Q2 8,631 0 0 0.0
2009 Q1 8,828 0 0 0.0
2008 Q4 7,824 2 0 255.6
2008 Q3 12,661 0 0 0.0
2008 Q2 13,700 3 1 219.0
Show 33 earlier quarters
Quarter Hours worked Citations S&S Per 1M hrs
2008 Q1 14,330 0 0 0.0
2007 Q4 13,797 4 1 289.9
2007 Q3 14,256 0 0 0.0
2007 Q2 14,322 0 0 0.0
2007 Q1 13,977 0 0 0.0
2006 Q4 14,006 1 1 71.4
2006 Q3 14,841 0 0 0.0
2006 Q2 14,815 0 0 0.0
2006 Q1 14,899 1 0 67.1
2005 Q4 14,042 0 0 0.0
2005 Q3 15,265 0 0 0.0
2005 Q2 14,797 0 0 0.0
2005 Q1 14,920 0 0 0.0
2004 Q4 13,581 3 0 220.9
2004 Q3 20,313 0 0 0.0
2004 Q2 14,605 0 0 0.0
2004 Q1 13,428 0 0 0.0
2003 Q4 14,596 0 0 0.0
2003 Q3 13,587 0 0 0.0
2003 Q2 12,248 0 0 0.0
2003 Q1 14,705 0 0 0.0
2002 Q4 15,310 3 1 196.0
2002 Q3 15,103 0 0 0.0
2002 Q2 13,305 0 0 0.0
2002 Q1 13,825 2 0 144.7
2001 Q4 17,645 3 0 170.0
2001 Q3 17,999 3 1 166.7
2001 Q2 18,223 0 0 0.0
2001 Q1 18,586 8 0 430.4
2000 Q4 18,013 0 0 0.0
2000 Q3 18,540 0 0 0.0
2000 Q2 18,307 0 0 0.0
2000 Q1 17,999 2 0 111.1
No fatalities recorded at this mine.

Reportable incidents

31 on file

2000 · 1 incident

1990 · 2 incidents

October 5, 1990 OR · Metal/Non-Metal warehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operator HANDLING OF MATERIALS
Northwest Aggregates · Struck by falling object

PLATE DROPPED ON FOOT WHILE WORKING ON ROLL CRUSHER.

March 22, 1990 OR · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDLING OF MATERIALS
Northwest Aggregates · Struck by falling object

TRAILER TONGUE CAME OFF TRUCK AND DROPPED ON FOOT WHILE HE WAS UNHOOKING.

1989 · 1 incident

June 14, 1989 OR · Metal/Non-Metal haul/off road/coal/ore/pit/quarry/rock/rubber tire truck driver, transportation truck driver HANDTOOLS (NONPOWERED)
Northwest Aggregates · Struck by... (Not Elsewhere Classified)

APPARANTLY IN FEB 1989 I NAME WAS STRUCK IN ARM BY MECHANIC. SWINGING A HAMMER AT TIME DID NOT BOLTER HIM ON 6-14-89 WHILE SHOVELING ROCK AT PLANT ARM TIGHTENED UP ON HIM. HE WENT TO DR WHO AD VISED LIGHT DUTY FOR 1 -2 WEEKS.

1988 · 6 incidents

November 30, 1988 OR · Metal/Non-Metal mechanic helper HANDLING OF MATERIALS
Northwest Aggregates · Struck by falling object

REMOVING FRAME WORK WHEICH WAS HOLDING A TARP OVER SHOVEL. ONE OF 2 X 4 HIT WORKER IN L. CHEEK.

June 16, 1988 OR · Metal/Non-Metal coal/ore shovel operator, shoveler, power shoveler SLIP OR FALL OF PERSON
Northwest Aggregates · Fall from machine

STEPPING DOWN FROM THE D-8 CAT I.NAME REACHED FOR THE HANDLE TO LOWER HIMSELF BUT GRABBED THE RUBBER STRIP WHICH WAS HANGING FROM THE DOOR ALLOWING HIM TO FALL TO THE GROUND

May 13, 1988 OR · Metal/Non-Metal coal/ore shovel operator, shoveler, power shoveler STRIKING OR BUMPING
Northwest Aggregates · Struck against stationary object

WHILE WALKING AROUND THE BASE OF THE SHOVEL HIT HIS HEAD ON THE STEP OF THE SHOVEL

March 23, 1988 OR · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech SLIP OR FALL OF PERSON
Northwest Aggregates · Caught in, under or between (Not Elsewhere Classified)

WHILE WORKING ONT HE CAB OF A 769 CAT END DUMP TRUCK I NAME HAD A CUTTING TORCH IN HIS LEFT HAND AND WKS HOLDING ONTO THE HAND RAIL WHICH HAD A RING MOUNTED TO IT. HIS THUMB WAS THRU THIS RIN G DURING THIS CUTTING HE SLIPPED AND WENT DOWN JUST ENOUGH TO PULL ON HIS THUMB AND TEAR SOME LIGAMENTS.

March 10, 1988 OR · Metal/Non-Metal rock driller HANDTOOLS (NONPOWERED)
Northwest Aggregates · Struck by... (Not Elsewhere Classified)

I.NME CONSTRUCTING PLACE TO GRIND DRILL BITS & STORE DRILL PARTS.NAILING TWO 2 X 4S TOGETHER HOLDING THEM WITH LEFT HAND AND HAMMERING WITH RIGHT.ON BACK SWING HE HIT A STUD IN BUILDING THROWI NG ARM OFF CAUSING HIM TO HIT LEFT THUMB WITH HAMMER.

1987 · 7 incidents

September 23, 1987 OR · Metal/Non-Metal drill operator HANDLING OF MATERIALS
Cobb Rock Inc · Caught in, under or between (Not Elsewhere Classified)

WHILE CLIMBING 8OWN FROM HIS TRUCK, HIS RING CAUGHT ON THE DOOR CUTTING HIS FINGER.

September 18, 1987 OR · Metal/Non-Metal electrician, lineman HANDLING OF MATERIALS
Cobb Rock Inc · Struck by falling object

WHILE TAKING A 9OCK SAMPLE FROM THE BUNKER, A 1" ROCK HIT HIM IN THE FRONT TOOTH.

September 16, 1987 OR · Metal/Non-Metal rock driller HANDLING OF MATERIALS
Cobb Rock Inc · Struck against stationary object

UNLOADING 2 X 43FROM PICKUP HAND SLID DOWN BOARD INJECTING 2'' SPLINTER.

September 8, 1987 OR · Metal/Non-Metal haul/off road/coal/ore/pit/quarry/rock/rubber tire truck driver, transportation truck driver POWERED HAULAGE
Cobb Rock Inc · Struck against a moving object

WHILE DRIVING A3DUMP TRUCK, SHE HIT A BUMP IN THE ROAD CAUSING PAIN IN LOWER BACK.

May 14, 1987 OR · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDLING OF MATERIALS
Cobb Rock Inc · Over-exertion (Not Elsewhere Classified)

WHILE HOLDING A3PORTA-POWER AGAINST HIS CHEST PULLING ON THE HANDLE HE NOTICED A PAIN IN HIS CHEST.

April 8, 1987 OR · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDLING OF MATERIALS
Cobb Rock Inc · Caught in, under or between a moving and a stationary object

WORKER WAS TAKI3G A WEAR PLATE FROM THE ROLL CRUSHER,WHILE LAYING IT DOWN ON THE CATWALK THE BOTTOM EDGE CAUGHT HIS LEFT WRIST.

March 24, 1987 OR · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDLING OF MATERIALS
Cobb Rock Inc · Over-exertion (Not Elsewhere Classified)

HOLDING 10'PIEC9 OF METAL WHILE MECHANICS CUT OTHER END,THE END DROPPED OFF CAUSING END HE WAS HOLDING TO TWIST AND STRAINED ELBOW.

1986 · 3 incidents

September 27, 1986 OR · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDLING OF MATERIALS
Cobb Rock Inc · Over-exertion in lifting objects

EMPLOYEE WAS LI0TING A CONVEYOR PULLEY AND EXPERIENCED A SHARP PAIN IN HIS LOWER BACK.

March 25, 1986 OR · Metal/Non-Metal warehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operator MACHINERY
Cobb Rock Inc · Fall from scaffolds, walkways, platforms

WHILE CUTTING A3 BOLT TO REMOVE ROTTED TIMBERS FROM THE PLATFORM ON THE SCALES, THE BOLT GAVE-WAY, THE TIMBERS COLLAPSED CAUSING A FALL OF 4/5 FEET, STRIKING SHIN ON A PIECE OF STEEL

January 13, 1986 OR · Metal/Non-Metal haul/off road/coal/ore/pit/quarry/rock/rubber tire truck driver, transportation truck driver SLIP OR FALL OF PERSON
Cobb Rock Inc · Fall from machine

WHEN DESCENDING3FROM TRUCK, MISSED THE BOTTOM STEP, CAUSING FALL TO THE GROUND. STRUCK LEFT ARM AND LEG LANDING ON BACK.

1985 · 7 incidents

December 23, 1985 OR · Metal/Non-Metal bulldozer operator, universal operator, heavy equipment operator, operating engineer SLIP OR FALL OF PERSON
Cobb Rock Inc · Fall from machine

UPON DECENDING 0ROM THE FRONT WHEEL LOADER, FOOT SLIPPED ON THE TOP STEP, WHICH WAS FROSTED, CAUSING TO FALL TO THE GROUND. STRUCK ARM ON CEMENT SLAB.

September 20, 1985 OR · Metal/Non-Metal haul/off road/coal/ore/pit/quarry/rock/rubber tire truck driver, transportation truck driver POWERED HAULAGE
Cobb Rock Inc · Struck against a moving object

BACK STRAIN FRO4 DRIVING TRUCK.

August 26, 1985 OR · Metal/Non-Metal outside foreman, leadman POWERED HAULAGE
Cobb Rock Inc · Struck against a moving object

MAKING A SERVICE RUN, WHEN THE PICK UP TRUCK WAS STRUCK BY AN ON COMING VEHICLE.

May 13, 1985 OR · Metal/Non-Metal coal/ore shovel operator, shoveler, power shoveler MACHINERY
Cobb Rock Inc · Over-exertion (Not Elsewhere Classified)

WAS WELDING ON A 180-D NW SHOVEL BUCKET. DURING THE SHIFT OF CONSTANT LEANING OVER TO WELD, RECEIVED MUSCLE STRAIN WHICH IRRIATATED A DISC.

April 23, 1985 OR · Metal/Non-Metal haul/off road/coal/ore/pit/quarry/rock/rubber tire truck driver, transportation truck driver HANDLING OF MATERIALS
Cobb Rock Inc · Over-exertion in lifting objects

WHILE LIFTING THE HOOD OF A DUMP TRUCK, SNAPPED A RIB IN BACK.

January 4, 1985 OR · Metal/Non-Metal haul/off road/coal/ore/pit/quarry/rock/rubber tire truck driver, transportation truck driver SLIP OR FALL OF PERSON
Cobb Rock Inc · Fall to lower level, (Not Elsewhere Classified)

THE AIR CLEANER INTAKE PIPE CAME LOOSE ON THE DUMP TRUCK. I PULLED INTO A PARKING LOT TO EXAMINE THE TROUBLE. UPON STEPPING DOWN FROM THE BUMPER ONTO A CABLE STEP, THE CABLE BROKE CAUSING ME T O FAL TO THE PAVEMENT ONTO MY HEEL.

1983 · 4 incidents

November 14, 1983 OR · Metal/Non-Metal crane operator, mobile equipment operator (meo), dragline operator, dropball operator, rigger HANDLING OF MATERIALS
L H Cobb-Crushed Rock · Over-exertion (Not Elsewhere Classified)

REMOVING A MOTOR COOLING FAN FROM 180D SHOVEL TWISTED BACK

October 21, 1983 OR · Metal/Non-Metal drill operator MACHINERY
L H Cobb-Crushed Rock · Struck by falling object

WHEN REMOVING THE DRILL STEEL FROM THE HOLE A PORTION OF THE FACE SLUFFED OFF STRIKING ON LEG AGGRAVATION OF OLD INJURY

October 10, 1983 OR · Metal/Non-Metal crane operator, mobile equipment operator (meo), dragline operator, dropball operator, rigger SLIP OR FALL OF PERSON
L H Cobb-Crushed Rock · Fall to the walkway or working surface

WHEN GREASING SHOVEL BUCKET STEPPED ON A SLICK ROCK AND FELL

August 5, 1983 OR · Metal/Non-Metal blaster, shooter, shotfirer, explosive worker, powder gang/monkey POISONING (TOXIC MATERIALS)
L H Cobb-Crushed Rock · Inhalation of radiations, caustics, toxic and noxious substances

OVER A PERIOD OF TIME THE CONSTGANT CONTACT WITH BLASTING POWER GLYCERINE HAS CAUSED A MORE FREQUENT ATTACK OF HEADACHES