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Portable #1 Metal/Non-Metal

Mountain Construction Company · Surface

Controlled by D Michael Frost

Lovell, Big Horn County, WY · Temporarily Idled

MSHA Mine ID: 4801636

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Email me when a new MSHA incident is filed at Portable #1.

Fatalities: 0
Total incidents: 2
Years on record: 2020–2022
Latest incident: Apr 2022

Compliance record

MSHA citations since 2003

citations

significant & substantial

$34,186

proposed penalties

$34,091

paid to date

Source: MSHA violations data, updated weekly.

Quarterly safety rates

Citations per million employee-hours, as reported to MSHA

Quarter	Hours worked	Citations	Per 1M hrs
2025 Q4	2,858	0	0.0
2025 Q3	1,434	4	2789.4
2025 Q2	1,745	0	0.0
2025 Q1	3,427	2	583.6
2024 Q4	4,118	0	0.0
2024 Q3	2,936	0	0.0
2024 Q2	3,138	0	0.0
2024 Q1	4,420	3	678.7

Quarters under 100,000 reported hours are greyed: too few hours for a stable rate.

No fatalities recorded at this mine.

Reportable incidents

2 on file

2022 · 1 incident

April 7, 2022 WY · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman HANDLING OF MATERIALS

Mountain Construction Company · Caught in, under or between a moving and a stationary object

Employee smashed finger in between balance weights and a bench.

2020 · 1 incident

January 22, 2020 WY · Metal/Non-Metal bulldozer operator, universal operator, heavy equipment operator, operating engineer SLIP OR FALL OF PERSON

Mountain Construction Company · Fall to the walkway or working surface

Got out of the car, walking over to equipment, there was a thin layer of snow covering a patch of ice EE didn't see the ice and slipped on it and landed with all of EE's weight on EE's knee.