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: 117 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections data, updated weekly.
Mann Lake Pit has $3K 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.
$3K
proposed penalties
$3K
current assessed
$3K
paid to date
$0
outstanding
28 assessments are final orders; 0 contested dockets.
As of the most recent assessment on 2003-07-01.
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: 2001-05-09, 25 years ago
0%
of limit-tested samples over the exposure limit
2
samples
2
limit-tested
Most sampled contaminants
Quartz, respirable, >1% Qtz2
Show the individual readings (2)
Date
Contaminant
Concentration
Limit
Conc / limit
Occupation
2001-05-09
Quartz, respirable, >1% Qtz
0.16
0.34
0.47
Laborer, Bullgang
2001-05-09
Quartz, respirable, >1% Qtz
0.15
0.45
0.33
Laborer, Bullgang
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.
Mann Lake Pit recorded 16.41 reportable injury cases per 100 full-time workers in 2003.
Injury rate, 2003
ⓘ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.
16.41
total case rate
0.00
days-away rate
0.000
fatality rate
Above average. The US metal and nonmetal mining average was 3.76 and the all-US-mining average was 4.43 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
2003 *
16.41
0.00
0.000
2002 *
0.00
0.00
0.000
2001 *
10.53
0.00
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.
Source: MSHA controller and operator history, updated weekly.
Workforce and production
Year
Employees
2003
9
2002
10
2001
12
2000
12
Source: MSHA quarterly employment and production, updated weekly.
Mann Lake Pit sits in Adams County, Colorado, where the Census mining category is 0.9% 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.
Adams County, Colorado · Population 524,408
0.9%
Mining share of county employment
$91,387
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
2003 Q4
2,410
0
0
0.0
2003 Q3
7,148
6
1
839.4
2003 Q2
6,826
0
0
0.0
2003 Q1
7,996
0
0
0.0
2002 Q4
8,413
0
0
0.0
2002 Q3
9,085
0
0
0.0
2002 Q2
10,596
2
1
188.8
2002 Q1
12,774
0
0
0.0
Show 8 earlier quartersHide earlier quarters
Quarter
Hours worked
Citations
S&S
Per 1M hrs
2001 Q4
9,936
0
0
0.0
2001 Q3
9,551
0
0
0.0
2001 Q2
9,596
14
2
1458.9
2001 Q1
8,916
0
0
0.0
2000 Q4
2,549
0
0
0.0
2000 Q3
6,742
0
0
0.0
2000 Q2
10,842
0
0
0.0
2000 Q1
8,352
6
0
718.4
No fatalities recorded at this mine.
Reportable incidents
16 on file
2003 · 2 incidents
September 24, 2003CO · Metal/Non-Metallaborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitmanHANDLING OF MATERIALS
EMPLOYEE WAS WORKING WITH A FORKLIFT OPERATOR TO PLACE A NEW HDPE PIPE. WHILE THE FORKLIFT WAS AWAY DELIVERING A LOAD OF PIPE, THE EMPLOYEE ATTEMPTED TO LIFT AND CARRY THREE 20' SECTIONS OF PI PE INSTEAD OF WAITING FOR FORKLIFT TO RETURN TO DO THE JOB, CAUSING HIM TO STRAIN HIS BACK.
August 29, 2003CO · Metal/Non-Metalminer, necOTHER
WORKING IN OFFICE A PERSON CAME IN AND WIND BLEWINTO OFFICE FROM OPEN DOOR. PAPER WENT FLYING. SCALE CLERK TRIED TO CATCH PAPERS AND HIT RIB CAGE ON EDGE OF COUNTER.
April 10, 1996CO · Metal/Non-Metallaborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitmanNONPOWERED HAULAGE
EMPLOYEE STEPPED UP ON A PIECE OF ANGLE IRON TAIL PULLEY GUARD TO TURN ON A WATER VALVE. HE LOST HIS BALANCE AND FELL TO THE GROUND. (VIOLATION OF A SAFETY RULE) CUT THE BACK OF HIS HEAD ON A BOARD.
March 5, 1991CO · Metal/Non-Metalfront-end loader, scraper-loader operator, pan operator, payloader, scraper rig operatorSLIP OR FALL OF PERSON
EMPLOYEE WAS GOING UP LOADER LADDER AND FELL DOWN. HE BRUISED HIS KNEE.
1990 · 1 incident
February 14, 1990CO · Metal/Non-Metalmaintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service techHANDLING OF MATERIALS