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.
PORTABLE PLANT #1 has $2K 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.
$2K
proposed penalties
$2K
current assessed
$2K
paid to date
$0
outstanding
27 assessments are final orders; 0 contested dockets.
As of the most recent assessment on 2001-10-18.
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: 2001-10-18, 24 years ago
50%
of limit-tested samples over the exposure limit
3
samples
2
limit-tested
Most sampled contaminants
Quartz, respirable, >1% Qtz21 over
Unlisted Particulate, respirable, <1% Qtz1
Show the individual readings (3)
Date
Contaminant
Concentration
Limit
Conc / limit
Occupation
2001-10-18
Quartz, respirable, >1% Qtz
0.6
0.53
1.13
Laborer, Bullgang
2001-10-18
Quartz, respirable, >1% Qtz
0.29
0.61
0.48
Crusher Oper/Worker
2001-10-18
Unlisted Particulate, respirable, <1% Qtz
0.13
Front-end Loader 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.
PORTABLE PLANT #1 recorded 0.00 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.
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 4.48 and the all-US-mining average was 5.26 cases per 100 workers.
In Idaho, metal and nonmetal mining averaged 7.38 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 *
0.00
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
2002
47
2001
39
2000
39
Source: MSHA quarterly employment and production, updated weekly.
PORTABLE PLANT #1 sits in Ada County, Idaho, 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.
Ada County, Idaho · Population 508,052
0.1%
Mining share of county employment
$88,907
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 Q3
2,262
0
0
0.0
2002 Q2
5,330
0
0
0.0
2002 Q1
1,847
0
0
0.0
2001 Q4
9,985
17
3
1702.6
2001 Q3
2,827
0
0
0.0
2001 Q2
4,145
0
0
0.0
2001 Q1
6,605
2
1
302.8
2000 Q4
9,337
0
0
0.0
Show 3 earlier quartersHide earlier quarters
Quarter
Hours worked
Citations
S&S
Per 1M hrs
2000 Q3
6,310
0
0
0.0
2000 Q2
3,432
0
0
0.0
2000 Q1
2,151
8
2
3719.2
No fatalities recorded at this mine.
Reportable incidents
25 on file
1999 · 2 incidents
September 9, 1999ID · Metal/Non-Metalmaintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service techMACHINERY
EMPLOYEE DROPPED A PART ON HIS FOOT CAUSING HIM TO WANT TO GET X-RAYS.
1996 · 1 incident
September 16, 1996ID · Metal/Non-Metalwarehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operatorSLIP OR FALL OF PERSON
DOZER OPERATOR STATED HE BACKED OVER A RIDGE IN THE SOURCE CAUSING HIS NECK TO POP. AFTER INVESTIGATION WE FOUND THAT HE HAD HAD A PREVIOUS NECKINJURY APPROX 3 YEARS AGO.
June 29, 1995ID · Metal/Non-Metalfront-end loader, scraper-loader operator, pan operator, payloader, scraper rig operatorHANDLING OF MATERIALS
PULLING SCREENS FROM BUCKET OF LOADER I SLIPPED CUTTING EE ARM WITH A PUNCTURE WOUND. AT TIME OF INJURY INJURED JUST REQUIRED A TETNUS SHOT. IT BECAME A REPORTABLE INJURY WHEN INJURED WENT TO SEE DR ON JULY 28TH DUE TO MUSCLE OR NERVE SORNESS, SCREEN CLOTH WESTERN WIRE.
1993 · 1 incident
December 13, 1993ID · Metal/Non-Metalgreaser, grease man, oiler, lube man, dragline oilerSLIP OR FALL OF PERSON
WHILE REPLACING BLOW BARS IN IMPACTOR I WAS USING PRY BAR TO FREE BLOWBAR PRY BAR SLI-PED CASUING ME TO PULL MUSCLES IN BACK & NECK.
August 27, 1990ID · Metal/Non-Metalwarehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operatorSLIP OR FALL OF PERSON
WELDER WAS STANDING NEXT TO ANOTHER WELDER, WITH HIS HOOD UP WHEN 2ND WELDER CHIPPED HIS WELD GETTING A FRAGMENT IN #1 WELDER'S EYE. SCRATCHED HIS EYE BALL CAUSING PAIN. SAFETY GLASSES WERE PR OVIDED WITH INSTRUCTIONS ON USAGE DURING LAST SAFETY MEETING.
June 26, 1990ID · Metal/Non-Metalwarehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operatorHANDLING OF MATERIALS