Mining Incidents

Summit Materials LLCController

MSHA Controller ID: M02046
Fatalities
7
Total incidents
475
Mines on record
116
Years on record
2000–2026

Safety benchmark

Recorded fatalities relative to other controllers with a fatal MSHA history. Percentile is computed across the 590 controllers with at least one recorded fatality.

Fatality-count percentile
96th

More recorded fatalities than 96% of controllers on file.

Rank
#23of 590

Position when controllers are sorted by recorded fatalities.

Vs industry mean
3.4×

Industry mean: 2.0 fatalities per fatal-history controller.

This controller
7
Industry mean
2
Industry median
1
Peers at similar incident volume

Methodology: percentile and rank computed across MSHA controllers with at least one recorded fatality. Industry mean is the average across that same population. Peers are sampled by closest total-incident count, regardless of fatality outcome.

Top causes

  • MACHINERY4 fatalities · 45 non-fatal
  • POWERED HAULAGE2 fatalities · 32 non-fatal
  • SLIP OR FALL OF PERSON1 fatality · 77 non-fatal
  • HANDLING OF MATERIALS155 non-fatal
  • HANDTOOLS (NONPOWERED)78 non-fatal
  • OTHER16 non-fatal

Incident timeline

2026
16
2025
29
2024
44
2023
43 (1f)
2022
27
2021
43 (2f)
2020
23
2019
33
2018
28
2017
28
2016
33
2015
25 (1f)
2014
11
2013
28 (1f)
2012
23
2011
12
2010
2
2009
3
2008
4
2007
4
2006
4 (1f)
2004
3
2003
2
2002
2
2001
1
2000
3 (1f)

Operators under this controller

Mines on record

Fatalities under this controller

7 recorded
Struck by rolling or sliding object

An outside truck driver came onto this site to get loaded where the driver then parked their truck and was out of view from out scale house. Driver began to work on the back of the truck where the air bag blew out from under the truck and hit the driver in the head. Driver was not our employee, nor was the driver supposed to be working on their truck.

Struck by powered moving object

An employee was fatally injured during maintenance work on the hopper. EE was operating a CAT forklift in close proximity to a Volvo excavator. EE exited the vehicle without notifying the other employees working in the area. Other employees stated they heard a ""pop"" and found the forklift operator unconscious next to the fork of the forklift.

Fall from headframe, derrick or tower

The employee was last seen on top of the tower and determined to be missing. The employee was found in a pipe traveling from the cyclone discharge box to the thickener tank. Investigation has revealed that the employee traveled outside the provided safe access to the cyclone discharge box. It is not yet determined how the employee entered the pipe.

Struck by... (Not Elsewhere Classified)

Sub-contracted tow truck was dispatched to tow super sucker truck. Boom of tow truck was being operated by tow truck employee #1 when it struck tow truck employee #2 in the head. Employee #2 was taken by ambulance to local ER for treatment where he later passed away. Most data unknown due to HIPPA and subcontractor status of deceased

Struck against a moving object

On Monday 9/16/13 at 09:25a.m. a pit/haul truck driver, in truck number 22-2012, with 25 years, 42 weeks experience turned left and crashed through the protection berm and fell 80 feet to the pit floor

Caught in, under or between a moving and a stationary object

WHILE PERFORMING MAINTENANCE ON CONVEYOR BELT EMPLOYEE WAS PINNED BETWEEN WA500 KOMATSU LOADER AND CONVEYOR BELT LINE RESULTING IN HIS DEATH.

Struck against a moving object

WHEN POSITIONING THE DRILL, THE RIGHT REAR LEVELING FOOT SANK INTO A MUD SEAM ALLOWING THE DRILL TO OVERTURN. THE DRILL SLID OVER THE EDGE OF HIGHWALL AND THE ROCK LEDGE CRUSHED THE DRILL OPER ATORS COMPARTMENT CAUSING DEATH OF DRILL OPERATOR.