Mining Incidents

MOUNTAIN GATE LIMESTONE QUARRY: 41 MSHA citations Metal/Non-Metal

Controlled by Richard J Stimpel
Shasta County, CA  ·  Abandoned
MSHA Mine ID: 0404960

MOUNTAIN GATE LIMESTONE QUARRY has $9K in proposed MSHA penalties and $4K outstanding across 0 contested dockets, plus health sampling and the full incident record.

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Fatalities
0
Total incidents
16
Years on record
1989–2001
Latest incident
Sep 2001
Compliance record
MSHA citations since 2000
41
citations
19
significant & substantial
$8,541
proposed penalties
$4,541
paid to date
53% of proposed penalties paid to date, a $4,000 gap.
Source: MSHA violations data, updated weekly.
Inspection activity
MSHA inspections since 2000
5
inspections on record
151
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: 151 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections data, updated weekly.

MOUNTAIN GATE LIMESTONE QUARRY has $9K in proposed MSHA penalties and $4K 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.
$9K
proposed penalties
$9K
current assessed
$5K
paid to date
$4K
outstanding
41 assessments are final orders; 0 contested dockets.
As of the most recent assessment on 2001-04-24.
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.
46.3%
significant & substantial
7.3%
high negligence or reckless
46.3%
reasonably likely or greater
75.6%
permanently disabling or fatal if injury occurs
Negligence coding: 0.0% none, 14.6% low, 78.0% moderate, 7.3% 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: 2001-02-07, 25 years ago
4
samples
0
limit-tested
Most sampled contaminants
  • Unlisted Particulate, total, <1% Qtz3
  • Respirable dust, <.1mg1
Show the individual readings (4)
Date Contaminant Concentration Limit Conc / limit Occupation
2001-02-07 Unlisted Particulate, total, <1% Qtz 8.78 Laborer, Bullgang
2001-02-07 Respirable dust, <.1mg 0 Front-end Loader Operator
2001-02-07 Unlisted Particulate, total, <1% Qtz 4.03 Crusher Oper/Worker
2001-02-07 Unlisted Particulate, total, <1% Qtz 0.52 Rotary Bucket Ex. Operator
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.

MOUNTAIN GATE LIMESTONE QUARRY recorded 19.23 reportable injury cases per 100 full-time workers in 2001.

Injury rate, 2001
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.
19.23
total case rate
19.23
days-away rate
0.000
fatality rate
Above average. The US metal and nonmetal mining average was 4.48 and the all-US-mining average was 5.26 cases per 100 workers.
In California, metal and nonmetal mining averaged 5.17 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
2001 * 19.23 19.23 0.000
2000 * 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. Mountain Gate Limestone Quarry Inc 1988 to 2001
  2. Stimpel Wiebelhaus Associates 2001 to present
Source: MSHA controller and operator history, updated weekly.
Workforce and production
Year Employees
2001 13
2000 14
Source: MSHA quarterly employment and production, updated weekly.

MOUNTAIN GATE LIMESTONE QUARRY sits in Shasta County, California, where the Census mining category is 0.1% 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.
Shasta County, California · Population 181,554
0.1%
Mining share of county employment
$71,931
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
2001 Q4 3,463 0 0 0.0
2001 Q3 5,646 0 0 0.0
2001 Q2 5,765 9 7 1561.1
2001 Q1 5,927 11 4 1855.9
2000 Q4 6,669 0 0 0.0
2000 Q3 8,555 12 7 1402.7
2000 Q2 7,102 0 0 0.0
2000 Q1 4,292 9 1 2096.9
No fatalities recorded at this mine.

Reportable incidents

16 on file

2001 · 2 incidents

June 6, 2001 CA · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech MACHINERY
Mountain Gate Limestone Quarry Inc · Struck by falling object

PUT LADDER ON 125 CANICA- PUT HAND ON RUNG- ROCK FELL OFF CONVEYOR AND HIT RIGHT HAND- FRACTURE IN PINKY FINGER.

1999 · 2 incidents

October 20, 1999 CA · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman SLIP OR FALL OF PERSON
Mountain Gate Limestone Quarry Inc · Fall to lower level, (Not Elsewhere Classified)

WHEN CHECKING TO SEE IF WATER TRUCK SPRAY WAS SUFFICENT, TRIPPED ON ROCK AND FELL.

June 7, 1999 CA · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman HANDLING OF MATERIALS
Mountain Gate Limestone Quarry Inc · Struck by falling object

WHEN OPENING A ROCK CHUTE GATE LEFT HAND WAS RESTING ON GATE STOPPER. WHEN GATE FELL CRUSHED FINGER

1998 · 1 incident

1996 · 2 incidents

November 20, 1996 CA · Metal/Non-Metal warehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operator POWERED HAULAGE
Mountain Gate Limestone Quarry Inc · Fall to lower level, (Not Elsewhere Classified)

OPERATOR WAS EXTEMDOMG THE BOOM & DID NOT SEE BLOCK & TACKLE COME AGAINST THE TOP - IT SNAPPED WITH EE IN MAN BASKET. EE SUSTAINED BROKEN COLLAR BONE.

March 20, 1996 CA · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman HANDTOOLS (NONPOWERED)
Mountain Gate Limestone Quarry Inc · Struck against stationary object

WHILE SHOVELING UNDER A PIECE OF EQUIPMENT, EE BUMPED RIGHT HAND AGAINST EQUIPMENT. BROKEN RIGHT HAND.

1993 · 1 incident

April 8, 1993 CA · Metal/Non-Metal warehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operator MACHINERY
Mountain Gate Limestone Quarry Inc · Caught in, under or between running or meshing objects

EMPLOYEE PUT HIS HAND INTO THE AUGER AND THE SCREW CAUGHT HIS FINGERS RESULTING IN CUT FINGERS.

1992 · 1 incident

July 14, 1992 CA · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman POWERED HAULAGE
Mountain Gate Limestone Quarry Inc · Struck by... (Not Elsewhere Classified)

ROCK CAUGHT A SHOVEL IN THE TAIL PULLEY AND WHEN EMPLOYEE TRIED TO REMOVE THE SHOVEL, THE SHOVEL HIT THE EMPLOYEE IN THE FACE.

1990 · 3 incidents

July 14, 1990 CA · Metal/Non-Metal prep plant foreman, supervisor, mill plant supervisor, kiln supervisor MACHINERY
Mountain Gate Limestone Quarry Inc · Struck by... (Not Elsewhere Classified)

HE WAS RE-INSTALLING THE BELLY PAN ON THE D-9 CAT USING THE AIR IMPACT WRENCH. THE BOLT HE WAS TRYING TO TIGHTEN WAS SPINNING ON THE BACK SIDE, SO HE REACHED AROUND TO HOLD THE NUT AND IT CAUG HT HIS THUMB.

June 4, 1990 CA · Metal/Non-Metal warehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operator SLIP OR FALL OF PERSON
Mountain Gate Limestone Quarry Inc · Fall from ladders

HE WAS STEPPING DOWN OFF THE LADDER OF THE 2 DECK SCREEN AND TWISTED HIS ANKLE.

1989 · 4 incidents

December 2, 1989 CA · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman HANDLING OF MATERIALS
Mountain Gate Limestone Quarry Inc · Struck by falling object

HE WAS UNLOADING CRUSHER PARTS & THEY FELL OUT OF HANDS. HE TRIED TO CATCH THEM WHEN THEY FELL & LANDED ON FINGERS.

November 2, 1989 CA · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman MACHINERY
Mountain Gate Limestone Quarry Inc · Caught in, under or between (Not Elsewhere Classified)

THEY WERE IN THE PROCESS OF SHUTTING DOWN FOR THE DAY.DAILY PROCEDURE IS TO LIFT THE LID ON THE CANICA FOR INSPECTION BY THE NIGHT MECHANIC.INJURED AND ANOTHER EMPLOYEE STEPPED INSIDE OF THE C ANICA WHILE ANOTHER EMPLOYEE WAS PUTTING THE COVER ON THE SWITCHBOARD WHICH HIT THE SWITCH FOR THE CANICA.HE IMMEDIATELY TURNED THE SWITCH BACK OFF,BUT INJURED AND ANOTHER EMPLOYEE WERE KNOCK

November 2, 1989 CA · Metal/Non-Metal warehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operator MACHINERY
Mountain Gate Limestone Quarry Inc · Fall onto or against objects

SHUTTING DOWN FOR THE DAY,..STEPPED INSIDE CRUSHER WHILE I.NAME PUT COVER ON SWITCHBOARD WHICH HIT SWITCH.IMMEDIATELY TURNED SWITCH BACK OFF BUT I.NAME AND ANOTHER WERE KNOCKED INTO THE CRUSHE CH FOR CRUSHER.IMMEDIATELY TURNED SWITCH BACK OFF BUT BOTH I.NAME AND OTHER KNOCKED INTO CANICA.

July 24, 1989 CA · Metal/Non-Metal drill operator MACHINERY
Mountain Gate Limestone Quarry Inc · Flash burns (welding)

HE HOISTED THE DRILL UP TO CLEAN THE DRIVE STEEL THAT WAS PACKED WITH MUD. THE FRIVE STEEL FELL OUT OF THE COUPLING CAUSING THE COUPLING TO SPIN LOOSE. THE COUPLING FELL HITTING HIM IN THE HEA D.