Mining Incidents

Mayfield Pit: 72 MSHA citations Metal/Non-Metal

Central Utah Stone · Surface
Controlled by Bryce H Haas
Mayfield, Sanpete County, UT  ·  Abandoned
MSHA Mine ID: 4202309

Mayfield Pit has $13K in proposed MSHA penalties and $10K outstanding across 0 contested dockets, plus health sampling and the full incident record.

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Fatalities
0
Total incidents
0
Years on record
Latest incident
Compliance record
MSHA citations since 2001
72
citations
15
significant & substantial
$13,184
proposed penalties
$2,781
paid to date
21% of proposed penalties paid to date, a $10,403 gap.
Source: MSHA violations data, updated weekly.
Inspection activity
MSHA inspections since 2001
22
inspections on record
371
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: 371 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections data, updated weekly.

Mayfield Pit has $13K in proposed MSHA penalties and $10K 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.
$13K
proposed penalties
$13K
current assessed
$3K
paid to date
$10K
outstanding
61 assessments are final orders; 0 contested dockets.
As of the most recent assessment on 2009-12-01.
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.
24.6%
significant & substantial
4.9%
high negligence or reckless
24.6%
reasonably likely or greater
75.4%
permanently disabling or fatal if injury occurs
Negligence coding: 0.0% none, 4.9% low, 90.2% moderate, 4.9% 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: 2004-07-15, 22 years ago
86%
of limit-tested samples over the exposure limit
8
samples
7
limit-tested
Most sampled contaminants
  • Quartz, respirable, >1% Qtz76 over
  • Unlisted Particulate, respirable, <1% Qtz1
Show the individual readings (8)
Date Contaminant Concentration Limit Conc / limit Occupation
2004-07-15 Quartz, respirable, >1% Qtz 1.91 0.55 3.47 Backhoe Operator
2004-07-15 Quartz, respirable, >1% Qtz 0.91 0.56 1.63 Stone Polisher/Cutter
2002-03-19 Quartz, respirable, >1% Qtz 1.07 0.92 1.16 Stone Polisher/Cutter
2001-06-06 Quartz, respirable, >1% Qtz 0.59 0.52 1.13 Stone Polisher/Cutter
2001-06-06 Quartz, respirable, >1% Qtz 9.95 2.73 3.64 Stone Polisher/Cutter
2001-06-06 Quartz, respirable, >1% Qtz 1.15 0.64 1.80 Backhoe Operator
2001-06-06 Quartz, respirable, >1% Qtz 0.41 0.79 0.52 Mechanic
2001-06-06 Unlisted Particulate, respirable, <1% Qtz 6.34 Stone Polisher/Cutter
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.

Mayfield Pit recorded 0.00 reportable injury cases per 100 full-time workers in 2004.

Injury rate, 2004
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 3.73 and the all-US-mining average was 4.33 cases per 100 workers.
In Utah, metal and nonmetal mining averaged 2.51 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
2004 * 0.00 0.00 0.000
2003 * 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. Central Utah Stone 2000 to present
Source: MSHA controller and operator history, updated weekly.
Workforce and production
Year Employees
2006 7
2005 7
2004 10
2003 10
2002 10
2001 11
Source: MSHA quarterly employment and production, updated weekly.

Mayfield Pit sits in Sanpete County, Utah, where the Census mining category is 4.0% 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.
Sanpete County, Utah · Population 29,209
4.0%
Mining share of county employment
$67,459
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
2006 Q1 3,524 0 0 0.0
2005 Q4 4,131 0 0 0.0
2005 Q3 3,789 1 0 263.9
2005 Q2 3,141 0 0 0.0
2005 Q1 2,773 5 0 1803.1
2004 Q4 4,125 8 1 1939.4
2004 Q3 5,659 21 5 3710.9
2004 Q2 12,528 0 0 0.0
Show 11 earlier quarters
Quarter Hours worked Citations S&S Per 1M hrs
2004 Q1 6,985 0 0 0.0
2003 Q4 6,098 0 0 0.0
2003 Q3 5,539 3 2 541.6
2003 Q2 5,368 0 0 0.0
2003 Q1 6,120 5 1 817.0
2002 Q4 740 0 0 0.0
2002 Q3 5,140 2 0 389.1
2002 Q2 5,220 0 0 0.0
2002 Q1 4,103 5 0 1218.6
2001 Q4 3,637 0 0 0.0
2001 Q3 6,186 3 0 485.0

No reportable incidents on file.

MSHA has no recorded reportable accidents for this mine in the current dataset. New reports appear here within a week of being filed.