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: 78 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections data, updated weekly.
IMPERIAL BLACK has $276 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.
$276
proposed penalties
$276
current assessed
$276
paid to date
$0
outstanding
4 assessments are final orders; 0 contested dockets.
As of the most recent assessment on 2001-04-02.
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: 2001-03-29, 25 years ago
2
samples
0
limit-tested
Most sampled contaminants
Unlisted Particulate, respirable, <1% Qtz2
Show the individual readings (2)
Date
Contaminant
Concentration
Limit
Conc / limit
Occupation
2001-03-29
Unlisted Particulate, respirable, <1% Qtz
0.27
Stone Polisher/Cutter
2001-03-29
Unlisted Particulate, respirable, <1% Qtz
0.12
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.
Source: MSHA controller and operator history, updated weekly.
Workforce and production
Year
Employees
2002
0
2001
3
2000
4
Source: MSHA quarterly employment and production, updated weekly.
IMPERIAL BLACK sits in Grainger County, Tennessee, where the Census mining category is 0.4% 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.
Grainger County, Tennessee · Population 23,929
0.4%
Mining share of county employment
$51,351
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
2002 Q1
0
0
0
2001 Q4
0
0
0
2001 Q3
691
0
0
0.0
2001 Q2
1,424
1
1
702.2
2001 Q1
1,375
1
1
727.3
2000 Q4
486
2
0
4115.2
2000 Q3
1,416
0
0
0.0
2000 Q2
1,750
0
0
0.0
Show 1 earlier quartersHide earlier quarters
Quarter
Hours worked
Citations
S&S
Per 1M hrs
2000 Q1
1,534
0
0
0.0
No fatalities recorded at this mine.
Reportable incidents
7 on file
1998 · 1 incident
February 17, 1998TN · Metal/Non-Metalledgeman/hand, quarry manOTHER
THE MEN WERE OPENING THE MILL DOORS TO BRING IN MARBLE WHEN A MICRO BURST OF WIND PUSHED ONE DOOR INTO THE INJURED EMPLOYEE.THE DOOR CAUGHT HIS HAND NEXT TO THE FRAME AND CUT HIS CHEEK. NO STI TCHES WERE REQUIRED. THE HAND WAS X-RAYED AND ITWAS NOT BROKEN,ONLY BADLY BRUISED.
EMPLOYEE CLIMBED ON POLISHING TABLE TO SHEER OPERATOR WHERE TO GREASE MACHINE. THE TABLE WAS SLICK FROM POLISHING COMPOUND CAUSING OWNER TO SLIP AND FALL.
EMPLOYEE HAS A HERNIA IN THE RIGHT GROIN. HE REPORTED IT ON 19 APR. 94, AND SAID THAT IT HAPPENED TWO MONTHS PRIOR. HE HAD NOT REPORTED THE INJURY PREVIOUSLY. HE DID NOT STATE WHERE IT OCCU RRED. I DO NOT THINK THIS INJURY IS WORK REPLATED. I AM SENDING THIS REPORT INTO COVER MYSELF.
March 30, 1994TN · Metal/Non-Metalledgeman/hand, quarry manMACHINERY
BELT BROKE ON BLACK & DECKER SANDER AND CUT EE'S FINGER. EE TREATED FINGER WITH ANTISEPTIC AT QUARRY. CUT LATER GOT INFECTED AND EE HAD TO GO TO THE DR. TO HAVE THE CUT LANCED.
1992 · 1 incident
June 25, 1992TN · Metal/Non-Metalmine manager, mine foreman, mine ownerHANDLING OF MATERIALS