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HSG Portable Screen Plant #2: 3 reportable incidents Metal/Non-Metal

Montana Mtls & Cons · Surface
Controlled by CRH PLC
Helena, Lewis And Clark County, MT  ·  Abandoned
MSHA Mine ID: 2400785

MSHA record for HSG Portable Screen Plant #2 (mine ID 2400785). Fatalities, non-fatal incidents grouped by year, current operator and controller, and mine context.

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Fatalities
0
Total incidents
3
Years on record
1986–1999
Latest incident
Sep 1999
Inspection activity
MSHA inspections since 2001
3
inspections on record
22
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: 22 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections data, 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: 2001-05-22, 25 years ago
0%
of limit-tested samples over the exposure limit
1
samples
1
limit-tested
Most sampled contaminants
  • Quartz, respirable, >1% Qtz1
Show the individual readings (1)
Date Contaminant Concentration Limit Conc / limit Occupation
2001-05-22 Quartz, respirable, >1% Qtz 0.29 0.68 0.43 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.
Ownership history
  1. Big Sky Ready Mix 1950 to 1986
  2. Big Sky Ready Mix Inc 1986 to 2000
  3. Big Sky Ready Mix Llc 2000 to 2009
  4. Montana Mtls & Cons 2009 to present
Source: MSHA controller and operator history, updated weekly.
Workforce and production
Year Employees
2024 0
2023 0
2022 0
2021 0
2020 0
2019 0
2018 0
2017 0
2016 0
2015 1
2002 0
2001 13
2000 10
Source: MSHA quarterly employment and production, updated weekly.

HSG Portable Screen Plant #2 sits in Lewis and Clark County, Montana, where the Census mining category is 1.0% 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.
Lewis and Clark County, Montana · Population 72,580
1.0%
Mining share of county employment
$74,543
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
2024 Q2 0 0 0
2024 Q1 0 0 0
2023 Q4 0 0 0
2023 Q3 0 0 0
2023 Q2 0 0 0
2023 Q1 0 0 0
2022 Q4 0 0 0
2022 Q3 0 0 0
Show 39 earlier quarters
Quarter Hours worked Citations S&S Per 1M hrs
2022 Q2 0 0 0
2022 Q1 0 0 0
2021 Q4 0 0 0
2021 Q3 0 0 0
2021 Q2 0 0 0
2021 Q1 0 0 0
2020 Q4 0 0 0
2020 Q3 0 0 0
2020 Q2 0 0 0
2020 Q1 0 0 0
2019 Q4 0 0 0
2019 Q3 0 0 0
2019 Q2 0 0 0
2019 Q1 0 0 0
2018 Q4 0 0 0
2018 Q3 0 0 0
2018 Q2 0 0 0
2018 Q1 0 0 0
2017 Q4 0 0 0
2017 Q3 0 0 0
2017 Q2 0 0 0
2017 Q1 0 0 0
2016 Q4 0 0 0
2016 Q3 0 0 0
2016 Q2 0 0 0
2016 Q1 0 0 0
2015 Q4 0 0 0
2015 Q3 40 0 0 0.0
2002 Q3 0 0 0
2002 Q2 0 0 0
2002 Q1 208 0 0 0.0
2001 Q4 382 0 0 0.0
2001 Q3 159 0 0 0.0
2001 Q2 731 0 0 0.0
2001 Q1 300 0 0 0.0
2000 Q4 3,969 0 0 0.0
2000 Q3 6,185 0 0 0.0
2000 Q2 4,227 0 0 0.0
2000 Q1 3,786 0 0 0.0
No fatalities recorded at this mine.

Reportable incidents

3 on file

1999 · 1 incident

September 22, 1999 MT · Metal/Non-Metal warehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operator HANDLING OF MATERIALS
Big Sky Ready Mix Inc · Over-exertion in pulling or pushing objects

WORKING ON SCREEN ON WASH PLANT. HE WAS PULLING ON EQUIPMENT. PULLED TO HARD.

1991 · 1 incident

June 19, 1991 MT · Metal/Non-Metal outside foreman, leadman HANDTOOLS (NONPOWERED)
Big Sky Ready Mix Inc · Struck by... (Not Elsewhere Classified)

HAND SLIPPED OFF HANDLE OF CONE JACK. HANDLE SPUN AROUND AND HIT LEFT ARM, CUTTING IT.

1986 · 1 incident

October 20, 1986 MT · Metal/Non-Metal mine manager, mine foreman, mine owner MACHINERY
Big Sky Ready Mix Inc · Struck by falling object

I.NAME WAS ADJU8TING THE CONE AFTER BREAKDOWN WHEN A ROCK BOUNCED DOWN OVER THE PROTECTIVE SCREEN ON THE CONE SCREEN HITTING I.NAME ON THE CROWN OF HIS HEAD