Heartland Aggregate Mining Metal/Non-Metal

Heartland Aggregate Mining · Surface

Alma, Park County, CO · Active

MSHA Mine ID: 0505085

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Compliance record

MSHA citations since 2018

citations

significant & substantial

$10,302

proposed penalties

$10,302

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	S&S	Per 1M hrs
2025 Q4	1,410	2	0	1418.4
2025 Q3	3,235	4	2	1236.5
2025 Q2	1,395	0	0	0.0
2025 Q1	2,177	0	0	0.0
2024 Q4	2,945	2	0	679.1
2024 Q3	1,895	0	0	0.0
2024 Q2	4,095	0	0	0.0
2024 Q1	4,519	2	0	442.6

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

No fatalities recorded at this mine.

1 on file

July 2, 2018 CO · Metal/Non-Metal bulldozer operator, universal operator, heavy equipment operator, operating engineer SLIP OR FALL OF PERSON

Rosebud Excavating, Inc. · Fall onto or against objects

Lost footing & landed on beam. Taken to mine office, then to Summit Medical Center.