BEGINING HIS WORK SHIFT AFTER LUNCH-READYING HIMSELF TO CLEAN OUT THE BOTTOM-ROW OF DRILL HOLES. A SLAB OF LIMESTONE FELL FROM THE CEILING OF THE MINE, APPROX. 15\X30\ WITH A DEPTH OF 4" TO 12 " AND PART OF SAME STRUCK HIM.
Columbus Junction Underground Mine Metal/Non-Metal
Columbus Junction Underground Mine has $71K in proposed MSHA penalties and $151 outstanding across 5 contested dockets, plus health sampling and the full incident record.
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- Fatalities
- 1
- Total incidents
- 40
- Years on record
- 1985–2026
- Latest incident
- Apr 2026
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This rate is recorded citations divided by MSHA inspection hours, per 100 hours. It reflects inspection effort, not mine size or production.Columbus Junction Underground Mine has $71K in proposed MSHA penalties and $151 outstanding across 5 contested dockets.
ⓘ
Differences between proposed and paid penalties reflect both settlements and conference reductions and amounts still owed. Outstanding is the balance currently owed.ⓘ
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.| Quarter | Hours worked | Citations | S&S | Per 1M hrs |
|---|---|---|---|---|
| 2025 Q4 | 7,871 | 1 | 0 | 127.0 |
| 2025 Q3 | 7,356 | 2 | 0 | 271.9 |
| 2025 Q2 | 13,585 | 4 | 0 | 294.4 |
| 2025 Q1 | 6,468 | 1 | 0 | 154.6 |
| 2024 Q4 | 11,957 | 7 | 1 | 585.4 |
| 2024 Q3 | 13,297 | 1 | 1 | 75.2 |
| 2024 Q2 | 13,665 | 3 | 0 | 219.5 |
| 2024 Q1 | 6,716 | 2 | 0 | 297.8 |
Show 96 earlier quarters Hide earlier quarters
| Quarter | Hours worked | Citations | S&S | Per 1M hrs |
|---|---|---|---|---|
| 2023 Q4 | 9,053 | 4 | 0 | 441.8 |
| 2023 Q3 | 13,466 | 5 | 2 | 371.3 |
| 2023 Q2 | 13,155 | 7 | 1 | 532.1 |
| 2023 Q1 | 7,486 | 3 | 0 | 400.7 |
| 2022 Q4 | 10,731 | 6 | 0 | 559.1 |
| 2022 Q3 | 10,095 | 11 | 1 | 1089.6 |
| 2022 Q2 | 12,210 | 6 | 1 | 491.4 |
| 2022 Q1 | 6,510 | 2 | 0 | 307.2 |
| 2021 Q4 | 11,046 | 3 | 0 | 271.6 |
| 2021 Q3 | 14,529 | 3 | 1 | 206.5 |
| 2021 Q2 | 9,666 | 1 | 0 | 103.5 |
| 2021 Q1 | 4,037 | 0 | 0 | 0.0 |
| 2020 Q4 | 12,744 | 0 | 0 | 0.0 |
| 2020 Q3 | 12,687 | 0 | 0 | 0.0 |
| 2020 Q2 | 13,036 | 2 | 0 | 153.4 |
| 2020 Q1 | 4,413 | 1 | 0 | 226.6 |
| 2019 Q4 | 11,836 | 2 | 0 | 169.0 |
| 2019 Q3 | 12,888 | 3 | 0 | 232.8 |
| 2019 Q2 | 13,714 | 2 | 1 | 145.8 |
| 2019 Q1 | 4,965 | 1 | 0 | 201.4 |
| 2018 Q4 | 12,406 | 1 | 0 | 80.6 |
| 2018 Q3 | 12,976 | 4 | 1 | 308.3 |
| 2018 Q2 | 12,182 | 5 | 0 | 410.4 |
| 2018 Q1 | 4,982 | 3 | 1 | 602.2 |
| 2017 Q4 | 11,127 | 4 | 0 | 359.5 |
| 2017 Q3 | 13,485 | 2 | 0 | 148.3 |
| 2017 Q2 | 13,557 | 4 | 0 | 295.1 |
| 2017 Q1 | 6,177 | 4 | 1 | 647.6 |
| 2016 Q4 | 12,865 | 3 | 0 | 233.2 |
| 2016 Q3 | 13,200 | 2 | 1 | 151.5 |
| 2016 Q2 | 14,204 | 4 | 1 | 281.6 |
| 2016 Q1 | 5,140 | 2 | 1 | 389.1 |
| 2015 Q4 | 12,682 | 0 | 0 | 0.0 |
| 2015 Q3 | 13,668 | 8 | 2 | 585.3 |
| 2015 Q2 | 13,760 | 5 | 1 | 363.4 |
| 2015 Q1 | 5,794 | 4 | 1 | 690.4 |
| 2014 Q4 | 13,312 | 7 | 0 | 525.8 |
| 2014 Q3 | 14,186 | 5 | 1 | 352.5 |
| 2014 Q2 | 12,944 | 6 | 1 | 463.5 |
| 2014 Q1 | 5,038 | 1 | 1 | 198.5 |
| 2013 Q4 | 11,592 | 5 | 1 | 431.3 |
| 2013 Q3 | 12,377 | 7 | 3 | 565.6 |
| 2013 Q2 | 12,955 | 3 | 1 | 231.6 |
| 2013 Q1 | 6,633 | 0 | 0 | 0.0 |
| 2012 Q4 | 10,956 | 6 | 2 | 547.6 |
| 2012 Q3 | 11,834 | 0 | 0 | 0.0 |
| 2012 Q2 | 11,800 | 0 | 0 | 0.0 |
| 2012 Q1 | 5,895 | 2 | 0 | 339.3 |
| 2011 Q4 | 11,904 | 2 | 0 | 168.0 |
| 2011 Q3 | 13,748 | 3 | 1 | 218.2 |
| 2011 Q2 | 11,966 | 4 | 2 | 334.3 |
| 2011 Q1 | 5,790 | 3 | 2 | 518.1 |
| 2010 Q4 | 12,468 | 2 | 0 | 160.4 |
| 2010 Q3 | 10,827 | 16 | 5 | 1477.8 |
| 2010 Q2 | 11,047 | 5 | 0 | 452.6 |
| 2010 Q1 | 5,040 | 1 | 0 | 198.4 |
| 2009 Q4 | 10,641 | 2 | 1 | 188.0 |
| 2009 Q3 | 11,151 | 5 | 4 | 448.4 |
| 2009 Q2 | 10,747 | 7 | 2 | 651.3 |
| 2009 Q1 | 4,918 | 4 | 1 | 813.3 |
| 2008 Q4 | 11,541 | 5 | 2 | 433.2 |
| 2008 Q3 | 10,651 | 1 | 0 | 93.9 |
| 2008 Q2 | 9,879 | 2 | 1 | 202.4 |
| 2008 Q1 | 4,435 | 0 | 0 | 0.0 |
| 2007 Q4 | 9,019 | 3 | 0 | 332.6 |
| 2007 Q3 | 10,659 | 3 | 0 | 281.5 |
| 2007 Q2 | 11,880 | 1 | 0 | 84.2 |
| 2007 Q1 | 5,898 | 1 | 0 | 169.5 |
| 2006 Q4 | 10,328 | 11 | 2 | 1065.1 |
| 2006 Q3 | 11,493 | 3 | 0 | 261.0 |
| 2006 Q2 | 12,209 | 5 | 1 | 409.5 |
| 2006 Q1 | 6,155 | 4 | 1 | 649.9 |
| 2005 Q4 | 10,203 | 3 | 1 | 294.0 |
| 2005 Q3 | 12,797 | 0 | 0 | 0.0 |
| 2005 Q2 | 12,790 | 2 | 0 | 156.4 |
| 2005 Q1 | 6,028 | 0 | 0 | 0.0 |
| 2004 Q4 | 9,212 | 0 | 0 | 0.0 |
| 2004 Q3 | 11,132 | 5 | 0 | 449.2 |
| 2004 Q2 | 11,299 | 0 | 0 | 0.0 |
| 2004 Q1 | 3,999 | 0 | 0 | 0.0 |
| 2003 Q4 | 8,890 | 2 | 0 | 225.0 |
| 2003 Q3 | 9,906 | 6 | 0 | 605.7 |
| 2003 Q2 | 10,267 | 7 | 0 | 681.8 |
| 2003 Q1 | 4,391 | 3 | 0 | 683.2 |
| 2002 Q4 | 9,680 | 3 | 0 | 309.9 |
| 2002 Q3 | 10,108 | 3 | 1 | 296.8 |
| 2002 Q2 | 10,261 | 1 | 0 | 97.5 |
| 2002 Q1 | 4,362 | 2 | 0 | 458.5 |
| 2001 Q4 | 8,905 | 7 | 1 | 786.1 |
| 2001 Q3 | 11,127 | 9 | 2 | 808.8 |
| 2001 Q2 | 10,822 | 2 | 1 | 184.8 |
| 2001 Q1 | 5,544 | 1 | 0 | 180.4 |
| 2000 Q4 | 8,664 | 2 | 0 | 230.8 |
| 2000 Q3 | 11,784 | 3 | 0 | 254.6 |
| 2000 Q2 | 10,621 | 0 | 0 | 0.0 |
| 2000 Q1 | 5,001 | 2 | 0 | 399.9 |
Fatalities at this mine
1 recordedReportable incidents
39 on file (excluding fatalities above)2026 · 1 incident
7000-1 filed 7/23/25 for original event. mine has remained inaccessible since flood date. K order issued. Water levels in creek and pit have been highly variable over time. this rain event raised existing water levels. Berms placed to prevent pit access. No mine entry since July 21, 2025. 0 injuries occurred. report filed to abate Citation 5118900
2025 · 1 incident
Extreme flooding event caused unexpected water in the mine. Mine is inaccessible and investigation/remediation is ongoing. No personnel allowed in mine until fully cleared to do so. NO INJURIES
2023 · 1 incident
The miner was climbing down from a scaler and missed the last step falling backward onto a nearby pickup truck hitting EE's back.
2022 · 3 incidents
Miner was helping clean out a scale pit by removing buckets of mud and dirt material. The lifting caused a back strain they realized later that night.
The injury was diagnosed as a result of the shaking and jarring of the scaler EE operates. The original diagnosis was tendonitis of the shoulder and the cause undetermined.
Repairing a water truck when a tire fell on left foot fracturing it.
2021 · 3 incidents
While an employee stepped down from the emulsion truck, EE's foot slipped on a rock in the underground mine. Employee was seen by doctor and treated for bad sprain and/or possible avulsion fracture.
Employee was cleaning out a plugged chute on the rock crushing/screening plant hitting EE's right hand/thumb against the ironwork corner on the plant. This resulted in a laceration of the thumbnail and nail bed. Bottom part of thumbnail was cut off and sewn (2 stitches) back on as a protective cover for the nail bed healing and a preventative for infection.
Smoke from our electrical control house was reported to the Columbus Junction Fire Department at approximately 8:30 a.m. by a passing motorist. Cause of the fire was not determined by fire officials. The control house and all contents were destroyed.
2020 · 1 incident
Employee was using cutting wheel grinder to cut off broken angle iron from conveyor structure. The final cut caused the grinder to catch and caught the employee's gloved left hand, causing a laceration on EE's left ring finger, requiring 6 stitches.
2019 · 1 incident
Employee was using a razor knife to finish cutting a conveyor belt for splicing. EE drew the knife toward self cutting the inside of EE's left arm. The laceration was deep and approximately 1-1/2 inches long requiring 8 stitches to close.
2017 · 1 incident
While repairing the daybox on the emulsion truck, employee was under truck with open end wrench on bolt holding tight while fellow employee was on topside using an impact wrench to loosen a bracket. Employee holding wrench lost grip and caught open end of the wrench in palm of right hand causing laceration requiring 5 stitches
2016 · 1 incident
Performing maintenance work on drill battery box trying to loosen bolt with box end wrench & 3/4" drive with the wrench on the nut, holding tight and wrench slipped when 3/4" drive engaged causing wrench to dislodge and pinch and cut the finger tip
2015 · 1 incident
Employee stepped out of truck quickly (did not jump) while maintaining 3 points of contact and into water - did not see the rock under water while stepping down and rolled his right ankle. Employee continued to work rest of shift.
2013 · 1 incident
While doing maintenance work on the Secondary Impact Crusher Equip. ID#P-035 employee was attempting to manually roll hammers from a Svedala S250DC Crusher into the bucket of a skid steer to take to the scrap dumpster when he caused injury to his right shoulder.
2012 · 2 incidents
While using a maul to dislodge curtain liners in rock crusher (P-35) a metal sliver became dislodged and made a puncture wound in the navel area.
Normal working condition; while miner working/walking around bed/deck of Emulsion Truck stepped over one pipe with his left foot and placed this foot down on another pipe twisting this foot resulting in a sprain to his left foot.
2010 · 1 incident
While attempting to dislodge a rock from the tailgate of a Cline Haul Truck; company number H-43, the tailgate came down striking/smashing the employee's right index finger.
2009 · 1 incident
While cutting and grinding plates for a grizzly a metal flake became airborne and enter the left eye of our employee, requiring medical treatment to remove. The injury left no perminent impairment to the eye and employee returned to work after one days absence.
2006 · 2 incidents
Weather was clear and mild with no wind no contributing factor obvious. Worker slipped, tripped or fell from Primary Crusher. Worker suffered trauma to head, neck and fractured his right wrist.
While removing a hydrolic cylinder rod on a Tamrock DHA 107B Drill with air, the rod dislodged and exited the cylinder lacerating the thumb on the right hand of the employee; requiring six (6) stitches.
2005 · 1 incident
Maintenance - While attempting to remove oil cap on Volvo Loader Unit #L-32 the wrench slipped causing the employee's right hand to strike the loader hood lacerating the palm of his right hand, that required 6-7 stiches.
2002 · 1 incident
THE EMPLOYEES WERE WORKING IN THE SURFACE SHOP (MAINTENANCE ONLY) WITH A PIECE OF 1/2" THICK PLATING WEIGHING APPROXIMATELY 120 LBS. WHILE PICKING UP THE PLATE, THE EMPLOYEE'S FINGER WAS PINC
2001 · 1 incident
WHILE USING BOOM TRUCK S-68 TO MOVE STEPS AND AFTER WHILE THE BOOM WAS UNHOOKED NOT UN LOAD. THE BOOM FELL FROMT HE TRUCK BOLT METAL FATIGUE EE JUMPED FROM APPROX. THE AREA OF THE TRUCK RUNNIN G BAORD TO AVOID BEING STRUCK BY THE BOOM. IN DOING SO HE STRUCK THE GROUND WITH HIS SHOULDER. FACE AND HAND.
2000 · 1 incident
WHILE HOLDING A PRYBAR TO DRIVE A PIN OUT OF THE DRILL BOOM. THE BAR BOUNCED OVER AND HIT EE ABOVE THE LEFT EYE. THIS RESULTED IN A CUT THAT REQUIRED STITCHES. NO LOST WORK DAYS OR RESTRICTED DUTY.
1998 · 1 incident
WHILE TIGHTING ABOLT USED TO RETAIN A HAMMER IN THE CRUSHER, AN EMPLOYEE SWUNG A SLEGE HAMMER THAT STRUCK A HAMMER THAT DEFLECTED THE HEAD OF THE SLEDGEHAMMER STRIKING EE'S FINGER. SMASHED I NDEX FINGER, LIMITING USE OF LEFT HAND.
1997 · 1 incident
WHILE REMOVING AN APPROX. 1 POUND ROCK MANAGEABLY FROM A MANUFACTURED SAND STOCK PILE, ANOTHER ROCK OF SIMILAR WEIGHT AND SIZE VIBRATED OFF THE SCREENING PLANT CONTACTED WITH EMPLOYEES LITTLE FINGER ON RIGTH HAND-SMASHING OR CRUSHING-INJURIES RESULTING IN STITCHES.
1996 · 1 incident
WHILE MANUALLY LIFTING THE HOOD OFF LOADER, THE HOOD SLIPPED AND PINCHED THE PINKY FINGER.
1995 · 1 incident
EE WAS DRIVING THE STOCKPILE TRUCK FROM THE PLANT TO THE STOCKPILE ARE WHEN HE NOTICED THAT THE TEMPERATURE GAUGE SHOWED A HIGHER READING THEN NORMAL. HE DROVE TO THE SHOP AREA & RAISED THE CO VERING TO RELEASE THE RADIATOR CAP & RELIEVE BUILT UP PRESSURE. WHILE RELEASING THE CAP THAT WASUNDER PRESSURE, WHEN THE SEAL RELEASED, THE CAP BLEW OFF IN HIS HAND & STEAM & RADIATOR FLUID S
1994 · 1 incident
TRUCK DRIVER LEFT TRUCK TO GO TO CRUSHER TO HELP PRY LARGE ROCK THAT WAS CAUGHT IN OPENING OF HOPPER. TRYING TO TURN IT TO FEED INTO CRUSHER. ARMS CAME BACK WHILE PRYING CAUGHT ELBOW ON BAR EN D.
1993 · 3 incidents
WHILE CHANGING HAMMERS ON P-22 (IMPACT11) PIECES OF METAL CHIPPED OFF A SHOE THAT HOLDS HAMMER IN PLACE ONE PIECE OF METAL HIT EE LEFT KNEE CAUSING A LACERATION RT ABOVE THE KNEE IT REQUIRED 2 STITCHES & A TETNUS SHOT
WHILE CHANGING HAMMERS ON P-22 [IMPACT II], PIECES OF METAL CHIPPED OFF A SHOE THAT HOLDS HAMMER IN PLACE. ONE PIECE BECAME IMBEDDED IN INJURED'S RIGHT ARM. SAW COMPANY DOCTOR, REEIVED TETNUS SHOT & REFERRAL TO HOSPITAL FOR MINOR SURGERY FOR REMOVAL OF METAL. SAW DOCTOR TWICE IN OFFICE, EVERYTING IS HEALING FINE, NO STITCHES. NO LOSS TIME OTHER THAN APPOINTMENTS.
WHILE CHANGING HAMMERS ON P-22 (IMPACTII) PIECES OF METAL CHIPPED OFF A SHOE THAT HOLDS HAMMER IN PLACE ONE PIECE BECAME IMBEDDED IN EE ABODEMEN EE REMOVED THE OBJECT WENT TO DOC REQUIRED 4 ST ITCHES & A TETNUS SHOT
1992 · 1 incident
HE WAS EXITING HIS TRUCK- GOING DOWN LADDER- MISSED A RUNG CAUSING FEET TO GO OUT FROM UNDER HIM. HE LANDED FULL FORCE ON HIS HEELS. X-RAYS SHOW A BILATERAL NON-DISPLACED FRACTURE OF THE CALCA NEAL SPURS.
1990 · 2 incidents
INJURED WAS USING THE SHOVEL AT THE PLANT LOCATION REMOVING ROCK FINES FROM UNDER THE BELT.WHILE DOING THIS HE PULLED THE MUSCLES IN HIS LOWER BACK.
HE WAS DRIVING THE PIT TRUCK FROM INSIDE THE MINE TO THE CRUSHER IN THE PIT. WHEN INSIDE THE MINE ON THE DESIGNATED HAUL ROAD, HE HIT A HOLE JARRYING HIS BACK.
1987 · 1 incident
WHILE HE WAS EN9OUTE TO A NEW WORK AREA, HE MISJUDGED THE DEPTH OF A WATER HOLE, STEPPED IN IT AND TURNED HIS ANKLE.
1985 · 2 incidents
AT J-20 LOCATION EMPLOYEE WAS PREPARING TO MOVE TO A NEW DRILLING SITE HE WAS DISMOUNTING FROM TRACTOR THAT PULLS AIR COMPRESSOR & STEPPED ON A PIECE OF SHOT ROCK THAT WAS PAYING ON MINE FLO OR HE TURNED HIS RT ANKLE HE SUFFERED A SPRAIN PROBABLE LOSS TIME IS 5 TO 7 DAYS
FOREMAN AND SEV9RAL OTHER EMPLOYEES WERE WORKING AT INTERSECTION IN THE MINE. AT 9:00 AM THE MEN NOTICED THAT AN APPRECIABLE AMOUNT OF SPALL WAS FALLING OFF THE BACK AT THE SITE OF THE FALL. THEY WENT TO LU3CH AND WHEN THEY RETURNED AT 12:30 PM THE GROUND FALL HAD PROGRESSED TO THE PINT THAT THE MINE MANAGEMENT ELECTED TO ABANDON THE AREA. AT 1:25 PM THE FAILURE REACHED THE SURFA
The full compliance file on Columbus Junction Underground Mine
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.