Mining Incidents

IRIDIAN QUARRY Metal/Non-Metal

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

IRIDIAN QUARRY has $3K in proposed MSHA penalties and $0 outstanding across 0 contested dockets, plus health sampling and the full incident record.

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Email me when a new MSHA incident is filed at IRIDIAN QUARRY.

Fatalities
0
Total incidents
19
Years on record
1989–2022
Latest incident
Feb 2022
Compliance record
MSHA citations since 2003
25
citations
6
significant & substantial
$2,843
proposed penalties
$2,843
paid to date
100% of proposed penalties paid to date, a $0 gap.
Source: MSHA violations data, updated weekly.
Inspection activity
MSHA inspections since 2002
35
inspections on record
392
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: 392 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections data, updated weekly.

IRIDIAN QUARRY has $3K in proposed MSHA penalties and $0 outstanding across 0 contested dockets.

Penalty disposition
Differences between proposed and paid penalties reflect both settlements and conference reductions and amounts still owed. Outstanding is the balance currently owed.
$3K
proposed penalties
$3K
current assessed
$3K
paid to date
$0
outstanding
25 assessments are final orders; 0 contested dockets.
As of the most recent assessment on 2026-01-06.
Source: MSHA assessed-violations and conference/litigation data, updated weekly.
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
2025 Q4 36 0 0 0.0
2025 Q3 0 0 0
2025 Q2 653 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
2024 Q1 0 0 0
Show 96 earlier quarters
Quarter Hours worked Citations S&S Per 1M hrs
2023 Q4 0 0 0
2023 Q3 0 0 0
2023 Q2 2,756 0 0 0.0
2023 Q1 3,790 0 0 0.0
2022 Q4 1,982 0 0 0.0
2022 Q3 2,126 0 0 0.0
2022 Q2 2,726 0 0 0.0
2022 Q1 1,676 0 0 0.0
2021 Q4 2,884 2 0 693.5
2021 Q3 5,141 0 0 0.0
2021 Q2 1,611 0 0 0.0
2021 Q1 0 0 0
2020 Q4 0 0 0
2020 Q3 1,899 0 0 0.0
2020 Q2 3,209 1 0 311.6
2020 Q1 862 0 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 231 0 0 0.0
2018 Q3 84 0 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 98 0 0 0.0
2016 Q4 1,969 2 1 1015.7
2016 Q3 3,296 0 0 0.0
2016 Q2 1,469 0 0 0.0
2016 Q1 0 0 0
2015 Q4 1,441 0 0 0.0
2015 Q3 0 0 0
2015 Q2 0 0 0
2015 Q1 0 0 0
2014 Q4 0 0 0
2014 Q3 447 0 0 0.0
2014 Q2 1,761 0 0 0.0
2014 Q1 7 0 0 0.0
2013 Q4 147 0 0 0.0
2013 Q3 443 0 0 0.0
2013 Q2 345 0 0 0.0
2013 Q1 13 0 0 0.0
2012 Q4 6 0 0 0.0
2012 Q3 2 0 0 0.0
2012 Q2 11 0 0 0.0
2012 Q1 13 0 0 0.0
2011 Q4 1,880 3 2 1595.7
2011 Q3 2,662 0 0 0.0
2011 Q2 1,954 0 0 0.0
2011 Q1 2,350 0 0 0.0
2010 Q4 3,130 0 0 0.0
2010 Q3 1,097 0 0 0.0
2010 Q2 308 0 0 0.0
2010 Q1 2,212 0 0 0.0
2009 Q4 1,615 4 1 2476.8
2009 Q3 788 0 0 0.0
2009 Q2 0 0 0
2009 Q1 556 0 0 0.0
2008 Q4 2,071 0 0 0.0
2008 Q3 1,237 0 0 0.0
2008 Q2 13 0 0 0.0
2008 Q1 11 0 0 0.0
2007 Q4 2,414 0 0 0.0
2007 Q3 747 0 0 0.0
2007 Q2 3,952 0 0 0.0
2007 Q1 2,686 0 0 0.0
2006 Q4 3,748 0 0 0.0
2006 Q3 3,568 0 0 0.0
2006 Q2 4,134 0 0 0.0
2006 Q1 1,391 0 0 0.0
2005 Q4 1,994 2 1 1003.0
2005 Q3 1,053 0 0 0.0
2005 Q2 3,569 2 0 560.4
2005 Q1 2,633 0 0 0.0
2004 Q4 2,656 0 0 0.0
2004 Q3 1,253 0 0 0.0
2004 Q2 3,087 0 0 0.0
2004 Q1 2,649 3 0 1132.5
2003 Q4 2,132 0 0 0.0
2003 Q3 2,942 0 0 0.0
2003 Q2 2,651 3 0 1131.6
2003 Q1 2,503 0 0 0.0
2002 Q4 1,661 0 0 0.0
2002 Q3 100 0 0 0.0
2002 Q2 0 0 0
2002 Q1 0 0 0
2001 Q4 1,730 0 0 0.0
2001 Q3 1,514 0 0 0.0
2001 Q2 2,035 0 0 0.0
2001 Q1 3,429 0 0 0.0
2000 Q4 1,963 0 0 0.0
2000 Q3 2,090 0 0 0.0
2000 Q2 3,223 0 0 0.0
2000 Q1 1,973 0 0 0.0
No fatalities recorded at this mine.

Reportable incidents

19 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

1999 · 2 incidents

March 1, 1999 MN · Metal/Non-Metal drill operator SLIP OR FALL OF PERSON
Cold Spring Granite Company · Over-exertion (Not Elsewhere Classified)

EMPLOYEE WAS WALKING BEHIND THE GROVER, SLIPPED ON THE ICE, REACHED OUT TO GRAB THE TOOL BOX, CAUSING INJURY TO RIGHT SHOULDER.

1998 · 1 incident

November 2, 1998 MN · Metal/Non-Metal mine manager, mine foreman, mine owner HANDTOOLS (NONPOWERED)
Cold Spring Granite Company · Caught in, under or between (Not Elsewhere Classified)

EE WAS TIGHTENING A SCREW WITH A JACKKNIFE AND THE BLADE CLOSED ON HIS LEFT INDEX FINGER, CUTTING THE TENDON.

1997 · 1 incident

March 8, 1997 MN · Metal/Non-Metal ledgeman/hand, quarry man MACHINERY
Cold Spring Granite Company · Over-exertion (Not Elsewhere Classified)

EMPLOYEE WAS OPERATING A JACK HAMMER, HE EXPERIENCED PAIN IN HIS RIGHT WRIST. EMPLOYEE WENT TO THE DR ON 3-8-97, REPORTED INJURY TO COMPAN ON 3-25-97.

1993 · 1 incident

August 2, 1993 MN · Metal/Non-Metal ledgeman/hand, quarry man DISORDERS (REPEATED TRAUMA)
Cold Spring Granite Company · Over-exertion (Not Elsewhere Classified)

EE S LEFT WRIST HURTS ALL THE TIME CARPAL TUNNEL.

1992 · 2 incidents

1990 · 4 incidents

December 3, 1990 MN · Metal/Non-Metal front-end loader, scraper-loader operator, pan operator, payloader, scraper rig operator MACHINERY
Cold Spring Granite Company · Fall to the walkway or working surface

THE EMPLOYEE WAS HOOKING A HOSE TO A STEEL AIR HIT HIM IN THE FACE CAUSING HIM TO LOSE HIS BALANCE AND FALL DOWN. ABRASION TO HIS FACE.

October 18, 1990 MN · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman MACHINERY
Cold Spring Granite Company · Struck by... (Not Elsewhere Classified)

EMPLOYEE WAS HOLDING THE STEEL WHILE FELLOW EMPLOYEE WAS RUNNING THE PLUG DRILL,THE STEEL BROKE AND SMASHED HIS LEFT THUMB.

October 8, 1990 MN · Metal/Non-Metal drill operator MACHINERY
Cold Spring Granite Company · Over-exertion (Not Elsewhere Classified)

EMPLOYEE STATED TO SUPERVISOR THAT HE HAD A BACKACHE-WHEN THE SUPERVISOR QUESTIONED HIM AS TO WHERE HE HAD HURT IT, HE REPLIED WITH THE STATEMENT THAT HE ALWAYS HAS A BACK ACHE. LATER IN THE DAY HE WENT TO SEE THE DOCTOR.

1989 · 1 incident

August 18, 1989 MN · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman HANDTOOLS (NONPOWERED)
Cold Spring Granite Company · Caught in, under or between (Not Elsewhere Classified)

HELPING UNLOAD BLOCK OF GRANITE FINGER PINCHED IN BETWEEN HOOK AND GRANITE CUT FRACT. OF FINGER.

For insurers, brokers, and safety consultants

The full compliance file on IRIDIAN QUARRY

A dated report covering the 26-year penalty trail, line-item violation pattern, contest and docket posture, rate-normalized peer benchmark, and full fatality history. Delivered as a PDF with the underlying data as CSV.