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: 296 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections data, updated weekly.
LYONS QUARRY has $5K in proposed MSHA penalties and $0 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.
$5K
proposed penalties
$5K
current assessed
$5K
paid to date
$0
outstanding
58 assessments are final orders; 0 contested dockets.
As of the most recent assessment on 2007-01-17.
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.
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: 2005-06-23, 21 years ago
0%
of limit-tested samples over the exposure limit
3
samples
3
limit-tested
Most sampled contaminants
Quartz, respirable, >1% Qtz3
Show the individual readings (3)
Date
Contaminant
Concentration
Limit
Conc / limit
Occupation
2005-06-23
Quartz, respirable, >1% Qtz
0.32
0.95
0.34
Utility Man
2005-06-23
Quartz, respirable, >1% Qtz
0.12
1.25
0.10
Front-end Loader Operator
2005-06-23
Quartz, respirable, >1% Qtz
0.38
0.55
0.69
Crusher Oper/Worker
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.
LYONS QUARRY recorded 0.00 reportable injury cases per 100 full-time workers in 2005.
Injury rate, 2005
ⓘ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
Below average. The US metal and nonmetal mining average was 3.76 and the all-US-mining average was 4.21 cases per 100 workers.
In Colorado, metal and nonmetal mining averaged 5.53 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
2005 *
0.00
0.00
0.000
2002 *
8.46
0.00
0.000
2001 *
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.
Source: MSHA controller and operator history, updated weekly.
Workforce and production
Year
Employees
2007
10
2006
9
2005
12
2004
7
2003
7
2002
9
2001
10
2000
10
Source: MSHA quarterly employment and production, updated weekly.
LYONS QUARRY sits in Boulder County, Colorado, where the Census mining category is 0.3% 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.
Boulder County, Colorado · Population 328,317
0.3%
Mining share of county employment
$102,772
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
WHILE CLIMBING LADDER (POWER SCREEN) EE STRUCK HEAD ON LOW CLEARANCE. THIS CAUSED HIM TO LOSE BALANCE AND FALL TO THE GROUND WHERE HE STRUCK HIS HEAD ON A PIECE OF STEEL. HE RECEIVED 2 LACERATIONS ON HIS HEAD WHICH REQUIRED MEDICAL TREATMENT.
2002 · 1 incident
October 30, 2002CO · Metal/Non-Metalwarehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operatorHANDLING OF MATERIALS
LABORER WORKING NEAR WELDING OPERATION. HE THOUGHT HE GOT DUST IN HIS EYE BUT THE DR DIAGNOSED FLASH BURNS EVIDENTLY HE HAD BEEN FACING THE WELDER AND RECIEVED UV FLASH BURNS TO HIS EYES.
1990 · 3 incidents
October 19, 1990CO · Metal/Non-Metalhaul/off road/coal/ore/pit/quarry/rock/rubber tire truck driver, transportation truck driverSLIP OR FALL OF PERSON
THE EE ALLEGES THAT HE WAS TIEING DOWN THE EQUIPMENT BEING LOADED ON THE TRAILER. THE CHAIN BROKE CAUSING HIM TO FALL AND BREAK HIS RIGHT LOWER LEG JUST ABOVE THE ANKLE.
April 20, 1990CO · Metal/Non-Metalmaintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service techHANDTOOLS (NONPOWERED)
EMP. ALLEGES HE WAS CARRYING 2 5 50 # BAHS OF BLASTING AGENT AT A TIME FROM THE FRONT END LOADER BUCKET TO THE HOLES TO BE BLASTED. ON HI S 4TH TRIP HE FELT PAIN IN HIS BACK.
February 25, 1988CO · Metal/Non-Metalmaintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service techELECTRICAL
EMPLOYEE ALLEGEDLY WAS TESTING THE VOLTAGE LEVEL AT THE GENERATOR SET, USING A VOLTAGE METER. AS HE INSERTED EACH PROBE THE CURRENT ARCHED ACROSS THE PROBES. A FLASH AND EXTREME HEAT WAS PRO DUCED URNING THE BACK SIDE OF BOTH HANDS.
1987 · 4 incidents
September 15, 1987CO · Metal/Non-Metalmaintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service techHANDLING OF MATERIALS
EMPLOYEE ALLEGE8 HE WAS DRIVING A HAULPAK FROM QUARRY BOTTOM UP TO THE JAW CRUSHER WITH RAW MATERIAL.THE HAULPAK WAS SLOWING DOWN TO A CRAWL ON A STEEP GRADE UPHILL,LOADED,WHEN THE LOADERE CAM E FROM BEHIND T2 ASSIST THE HAULPAK AND HIT THE HAULPAK CAUSING THE DRIVER TO WHIPLASH.
EMPLOYEE ALLEDG9S HE WAS OPERATING A 988 LOADER WHICH BEGAN BY SELF SHIFTING FROM SECOND GEAR FORWARD TO FIRST GEAR REVERSE CAUSING OPERATOR TO THRUST FORWARD THEN WHIP BACK IN A WHIPLASHING ACTION 3
1985 · 1 incident
August 27, 1985CO · Metal/Non-Metaldrill operatorMACHINERY