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River Ridge Metal/Non-Metal

Alpine Silica, LLC · Surface

Controlled by Pro Frac Holding Corp

Doddridge, Miller County, AR · Active

MSHA Mine ID: 0302065

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Email me when a new MSHA incident is filed at River Ridge.

Fatalities: 0
Total incidents: 2
Years on record: 2020–2025
Latest incident: Jun 2025

Compliance record

MSHA citations since 2019

116

citations

significant & substantial

$62,241

proposed penalties

$62,241

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	35,471	5	0	141.0
2025 Q2	39,022	8	2	205.0
2024 Q4	40,951	5	1	122.1
2024 Q3	43,018	3	1	69.7
2024 Q2	60,778	0	0	0.0
2023 Q4	66,507	11	3	165.4
2023 Q1	6,389	3	0	469.6
2022 Q4	6,606	4	2	605.5

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

2025 · 1 incident

June 15, 2025 AR · Metal/Non-Metal barge/boat/dredge/towbarge/towboat/leach operator, riverman, deck hand SLIP OR FALL OF PERSON

Alpine Silica, LLC · Fall to the walkway or working surface

An employee was using a break-over binder and chain to secure poly pipe to a float, the chain slipped, causing employee to fall awkwardly, (same Level) breaking EE's lower left leg.

2020 · 1 incident

September 24, 2020 AR · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman SLIP OR FALL OF PERSON

Performance Proppants, LLC · Fall from machine

One of our safety rack techs fell off a tanker truck. The driver of the truck drove off before our EE could get off the top. EE was taken to the hospital for evaluation but had no major injuries. EE is very sore and bruised up.