Mining Incidents

GREENHORN PIT & MILL Metal/Non-Metal

Controlled by Jeff Hansen
grass valley, Nevada County, CA  ·  Active
MSHA Mine ID: 0403138

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Fatalities
0
Total incidents
23
Years on record
2000–2022
Latest incident
Dec 2022
Compliance record
MSHA citations since 2000
99
citations
13
significant & substantial
$10,292
proposed penalties
$10,292
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 6,588 0 0 0.0
2025 Q3 6,473 0 0 0.0
2025 Q2 5,572 1 0 179.5
2025 Q1 4,190 0 0 0.0
2024 Q4 5,488 0 0 0.0
2024 Q3 6,975 0 0 0.0
2024 Q2 6,469 0 0 0.0
2024 Q1 5,818 3 0 515.6
Quarters under 100,000 reported hours are greyed: too few hours for a stable rate.
No fatalities recorded at this mine.

Reportable incidents

23 on file

2022 · 3 incidents

December 14, 2022 CA · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman DUST DISEASE OF LUNGS
Hansen Brothers Enterprises · Inhalation of radiations, caustics, toxic and noxious substances

This minor has been diagnosed with silicosis.

September 7, 2022 CA · Metal/Non-Metal bulldozer operator, universal operator, heavy equipment operator, operating engineer HANDLING OF MATERIALS
Hansen Brothers Enterprises · Over-exertion in pulling or pushing objects

EE was pulling a large jack stand out from under a haul truck when EE felt pain in lower abdomen. EE did not feel EE needed to see a doctor at this point. EE said it was more of a discomfort than pain. On 9/16/22 EE notified supervisor that the injury was getting more uncomfortable. EE was sent to the doctor at this point.

August 25, 2022 CA · Metal/Non-Metal bulldozer operator, universal operator, heavy equipment operator, operating engineer HANDTOOLS (NONPOWERED)
Hansen Brothers Enterprises · Struck by falling object

While working under a haul truck a 3/4" ratchet slipped out of the employee's hands, striking the employee in the side of the head as it fell.

2021 · 3 incidents

September 3, 2021 CA · Metal/Non-Metal warehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operator STRIKING OR BUMPING
Hansen Brothers Enterprises · Struck against stationary object

The miner hit knee on a piece of machinery while walking past it.

February 8, 2021 CA · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDTOOLS (NONPOWERED)
Hansen Brothers Enterprises · Struck by... (Not Elsewhere Classified)

The miner hit the end of the left index finger while driving in a screen tension wedge. This resulted in a laceration on the tip of the finger requiring three sutures.

February 5, 2021 CA · Metal/Non-Metal warehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operator HANDLING OF MATERIALS
Hansen Brothers Enterprises · Over-exertion (Not Elsewhere Classified)

The miner suffered from a back strain while bent over replacing belt clips on a conveyor belt. The miner has a history of back issues. EE's back has two vertebras fused from an injury several years ago.

2018 · 1 incident

June 6, 2018 CA · Metal/Non-Metal prep plant foreman, supervisor, mill plant supervisor, kiln supervisor OTHER
Hansen Brothers Enterprises · Bodily reaction, (Not Elsewhere Classified)

The miner was working on a piece of equipment while in a kneeling position. An air conditioner hose blew near the miner. When this happened the miner jumped up while turning to run from the potential hazard of the hose failing. The sudden twisting of miner's back and running caused a lower back strain.

2016 · 1 incident

September 12, 2016 CA · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman HANDLING OF MATERIALS
Hansen Brothers Enterprises · Over-exertion in pulling or pushing objects

Strained a muscle while unloading a tire from a loader bucket.

2014 · 1 incident

January 29, 2014 CA · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech MACHINERY
Hansen Brothers Enterprises · Flash burns (welding)

The miner received arc flash burn to his eyes. The miner was working with a welder in our welding shop. They were working back to back. The miner received the arc flash from the reflection off the inside of the welding helmet he was wearing.

2011 · 1 incident

June 3, 2011 CA · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman HANDLING OF MATERIALS
Hansen Brothers Enterprises · Caught in, under or between a moving and a stationary object

While unloading some loader cutting edges out of a loader bucket the employee smashed his right index finger between a cutting edge and a wood block he was setting them on. This resulted in a laceration to his finger requiring five sutures.

2008 · 1 incident

February 13, 2008 CA · Metal/Non-Metal bulldozer operator, universal operator, heavy equipment operator, operating engineer EXPLODING VESSELS UNDER PRESSURE
Hansen Brothers Enterprises · Struck by... (Not Elsewhere Classified)

A hydraulic hose sprung a leak while the miner had a hold of it. The pressurized oil lacerated the side of his right middle finger.

2007 · 1 incident

February 8, 2007 CA · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDTOOLS (NONPOWERED)
Hansen Brothers Enterprises · Struck against stationary object

The employee of the contractor was adjusting a return roller on a conveyor on there portable stacking equipment. The wrench slipped off of a bolt while pushing on it causing his arm to make contact with the moving belt and the frame work resulting in a laceration and two broken bones in his right arm. Note: This job has been completed and the contractor will not return.

2006 · 1 incident

February 22, 2006 CA · Metal/Non-Metal warehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operator HANDTOOLS (NONPOWERED)
Hansen Brothers Enterprises · Struck by... (Not Elsewhere Classified)

Employee was stripping insulation off of an electrical connection with a utility knife. The knife slipped and cut the the top of his left thumb requiring 6 sutures.

2005 · 5 incidents

October 31, 2005 CA · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman SLIP OR FALL OF PERSON
Hansen Brothers Enterprises · Fall from scaffolds, walkways, platforms

Employee was walking down a cat walk when he stumbled on a step. He landed on his his left hand and thumb fracturing a bone in his thumb.

October 13, 2005 CA · Metal/Non-Metal front-end loader, scraper-loader operator, pan operator, payloader, scraper rig operator POWERED HAULAGE
Hansen Brothers Enterprises · Struck by... (Not Elsewhere Classified)

The equipment operator was installing a radiator fan guard after repairs were made to the engine. The operator used poor judgement and attempted installing this guard while the engine was running and made contact with the engine cooling fan. This resulted in a laceration requiring sutures to his right ring finger.

September 2, 2005 CA · Metal/Non-Metal front-end loader, scraper-loader operator, pan operator, payloader, scraper rig operator HANDLING OF MATERIALS
Hansen Brothers Enterprises · Over-exertion (Not Elsewhere Classified)

The operator was carrying items in both hands while climbing into the cab of a scraper. He set his right knee down on one of the steps to keep his blance and then pushed off with that knee to climb in the rest of the way. He felt a sharp pain in his knee when he pushed off. He said the pain quickly went away and he worked the rest of the day.

August 3, 2005 CA · Metal/Non-Metal bulldozer operator, universal operator, heavy equipment operator, operating engineer HANDLING OF MATERIALS
Hansen Brothers Enterprises · Over-exertion (Not Elsewhere Classified)

While the employee was dismounting a Cat 621 scraper/waterpull he strained his back. Employee stated he was using the proper three point dismounting procedure when the strain occurred.

April 6, 2005 CA · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech SLIP OR FALL OF PERSON
Hansen Brothers Enterprises · Over-exertion (Not Elsewhere Classified)

Employee walked down a ramp along side of a screen, at the bottom of the ramp is one step down to a platform. When the employee stepped onto the platform his left knee gave out on him. Employee stated there was no material on the platform and he was looking at the platform when he stepped onto it. The doctor diagnosed him with a sprained left knee.

2004 · 2 incidents

November 11, 2004 CA · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDLING OF MATERIALS
Hansen Brothers Enterprises · Over-exertion in lifting objects

Strained shoulder while lifting a 6" pump discharge hose.

April 12, 2004 CA · Metal/Non-Metal welder (shop) HANDTOOLS (NONPOWERED)
Hansen Brothers Enterprises · Caught in, under or between a moving and a stationary object

EE HAD CUT BOTH ENDS OF A 4" X 4" X 3/8" ANGLE IRON CROSSMEMBER APPX. 6'6" LONG WITH A CUTTING TORCH. WHEN THE CROSSMEMBER DID NOT FALL FREE, EE HELD ONE END WITH HIS LEFT HAND & HIT THE OTHER END WITH A HAMMER. THE END HE WAS HOLDING UNEXPECTEDLY FELL FIRST APPROX. 2' TO ANOTHER CROSSMEMBER, SMASHING 2 FINGERS BETWEEN THEM. BROKEN BONES AT THE TIPS OF 2 FINGERS; 10 SUTURES.

2002 · 1 incident

July 13, 2002 CA · Metal/Non-Metal bulldozer operator, universal operator, heavy equipment operator, operating engineer HANDLING OF MATERIALS
Hansen Brothers Enterprises · Struck against stationary object

WHILE CLEANING PARTS TO A CONE CRUSHER EMPLOYEE SLID HIS FINGER ALONG A SHARP THREAD AND SLICED IT. IT WAS A SMALL CUT NOT REQUIRING SUTURES. HE GAVE HIMSELF FIRST AID (CLEANED & APPLIED BAND AID) AND WENT BACK TO WORK.

2000 · 2 incidents

November 1, 2000 CA · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDLING OF MATERIALS
Hansen Brothers Enterprises · Caught in, under or between a moving and a stationary object

TWO WORKERS WERE CHANGING CUTTING EDGES ON A CAT 633 SCRAPER. INJURED WAS LAYING ON A CREEPER REMOVING BOLTS FROM THE CENTER EDGE. CO-WORKER WAS MOVING A SIDE EDGE OUT OF THE WAY. WHEN HE HEAR D THE EDGE HIT THE GROUND, HE TURNED AND FOUND INJURED'S RIGHT ARM PINNED UNDER THE CUTTING EDGE. HE REMOVED THE EDGE.

September 6, 2000 CA · Metal/Non-Metal warehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operator HANDLING OF MATERIALS
Hansen Brothers Enterprises · Over-exertion (Not Elsewhere Classified)

THE MINER CAME TO THE PLANT MGR. INDICATING THAYT HE PULLED SOMETHING IN HIS STOMACH AREA WHILE REMOVING STICKS FROM A CONVEYOR BELT. THE INJURY OCCURRED IN THE SAME AREA AS A RECENT GALLBLADD ER OPERATION. HE WAS SENT TOTHE DOCTOR TOHAVE IT CHECKED OUT.