Mining Incidents

IRIDIAN QUARRY Metal/Non-Metal

Isle, Mille Lacs County, MN  ·  Intermittent
MSHA Mine ID: 2100752

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Fatalities
0
Total incidents
7
Years on record
2000–2022
Latest incident
Feb 2022
Compliance record
MSHA citations since 2003
25
citations
6
significant & substantial
$2,843
proposed penalties
$2,843
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 36 0 0 0.0
2025 Q2 572 0 0 0.0
2025 Q1 0 0 0
2024 Q4 1,157 0 0 0.0
2024 Q3 0 0 0
2024 Q2 0 0 0
2023 Q4 0 0 0
2023 Q2 2,756 0 0 0.0
Quarters under 100,000 reported hours are greyed: too few hours for a stable rate.
No fatalities recorded at this mine.

Reportable incidents

7 on file

2022 · 1 incident

February 10, 2022 MN · Metal/Non-Metal drill operator HANDLING OF MATERIALS
Cold Spring Granite Company · Over-exertion in pulling or pushing objects

Employee was drilling holes in granite. The drill steel puller was not working correctly. Employee was pulling steel out by hand. A couple days later, on Sunday, Employee informed Supervisor that EE's right shoulder was hurting. EE sought medical advice, diagnosed Right AC Joint Sprain. At this time EE is unable to work until 2-24-2022, pending evaluation. Lost time injury.

2014 · 1 incident

June 16, 2014 MN · Metal/Non-Metal miner, prospector, nec HANDLING OF MATERIALS
Cold Spring Granite Company · Contact with hot objects or substances

Employee started fire on ground to burn garbage, returned to fire with second bunch of papers. He removed can of OFF from second bunch and saw can of blue paint already in fire. He turned away just as can of blue paint exploded and hot paint was sent into the air, burning employee's arms, right side of face, right ear, lower part of left leg and little spot on chest and back.

2011 · 1 incident

March 1, 2011 MN · Metal/Non-Metal ledgeman/hand, quarry man SLIP OR FALL OF PERSON
Cold Spring Granite Company · Fall from machine

Employee was pressure washing loader, climbed down off machine's ladder, lost balance on ice, slipped and fell on hip, causing left hip contusion. Did not return to work the following day but went to doctor, was released to return to work light duty, full release effective 3-8-11. One day lost time, three days light duty.

2007 · 1 incident

February 28, 2007 MN · Metal/Non-Metal drill operator SLIP OR FALL OF PERSON
Cold Spring Granite Company · Fall onto or against objects

Employee was running trim drill, drill steel broke. He went to get new drill steel. He did not unhook safety harness, got to end of rope the rope pulled him down and he fell on the foot of the drill, fracturing a rib on his right side.

2006 · 2 incidents

October 3, 2006 MN · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDLING OF MATERIALS
Cold Spring Granite Company · Struck by falling object

Employee was doing maintenance at Quarry, changing oil on a grove crane with the hood open. The hood pin was not in all the way. He hit the hood and the pin came out, slamming hood on his finger. He fractured his right index finger. He continued to work his shift, then saw doctor in the evening, returning to work the next day at the Rockville Shop.

June 20, 2006 MN · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman HANDLING OF MATERIALS
Cold Spring Granite Company · Caught in, under or between a moving and a stationary object

Employee was wedging stone, stone shifted, pinned his foot and ankle between stone and loader bucket. When bucket was lifted, foot was loosened and stone started to shift, he jumped from block and cut his arm. He sustained multiple fractures to the right ankle, possible skin damage to both sides of the right ankle.

2000 · 1 incident