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: 257 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections data, updated weekly.
Mission South Mill 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
23 assessments are final orders; 0 contested dockets.
As of the most recent assessment on 2001-01-10.
Source: MSHA assessed-violations and conference/litigation data, updated weekly.
Violation severity profile
ⓘShares are computed over citations that carry the MSHA gravity and negligence coding; a small share of records are uncoded.
Source: MSHA violations gravity and negligence coding, updated weekly.
Mission South Mill recorded 0.00 reportable injury cases per 100 full-time workers in 2000.
Injury rate, 2000
ⓘThis rate is reportable injury cases per 100 full-time-equivalent workers per year, computed as 200,000 times cases divided by MSHA operator-reported employee-hours. Cases are injuries MSHA graded degree 01 through 07; accident-only events that hurt no one are excluded, and so are contractor injuries, whose hours do not attach to a single mine. Rates begin in 2000 and are withheld below 20,000 hours in a year. Employment reports reach back to 1983, but those earlier years come from MSHA's archived file format and are not used in rates.
0.00
total case rate
0.00
days-away rate
0.000
fatality rate
No reportable injury cases in any year shown. Employee-hours were reported in each of those years, so these are true zeros rather than missing data. Citations, listed in the compliance record above, are inspector-found violations and are counted separately from worker injuries.
Below average. The US metal and nonmetal mining average was 4.77 and the all-US-mining average was 5.64 cases per 100 workers.
In Arizona, metal and nonmetal mining averaged 3.63 cases per 100 workers that year.
Source: injury cases from MSHA accident and injury records; employee-hours from MSHA quarterly employment reports. Rate is cases per 100 full-time-equivalent workers, operator employees only.
Source: MSHA controller and operator history, updated weekly.
Workforce and production
Year
Employees
2001
81
2000
78
1999
82
1998
85
1997
79
1996
70
1995
101
1994
66
1993
65
1992
77
1991
55
1985
14
1984
16
1983
39
Source: MSHA quarterly employment and production, updated weekly; years before 2000 come from MSHA's archived Part 50 employment files.
Mission South Mill sits in Pima County, Arizona, where the Census mining category is 0.6% of county employment.
Local economic context
ⓘCounty figures come from the US Census Bureau's American Community Survey, 5-year pooled estimates, so the 2023 vintage covers 2019 through 2023. The Census category is 'mining, quarrying, and oil and gas extraction', which is broader than MSHA jurisdiction and includes oil and gas workers no mine employs. These figures describe the surrounding county, not this mine, and are not a factor in any specific incident.
Pima County, Arizona · Population 1,049,947
0.6%
Mining share of county employment
$67,929
Median household income
Source: US Census Bureau, American Community Survey 2023 5-year estimates.
Quarterly safety rates
ⓘCitations per million reported employee-hours. Rates begin in 2000; earlier incidents are counted but not rate-adjusted, though reported hours reach back to 1983. 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
2001 Q1
38,048
9
5
236.5
2000 Q4
39,628
1
0
25.2
2000 Q3
40,347
3
0
74.4
2000 Q2
38,438
0
0
0.0
2000 Q1
38,637
3
0
77.6
No fatalities recorded at this mine.
Reportable incidents
43 on file
1999 · 5 incidents
November 2, 1999AZ · Metal/Non-Metalmaintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service techHANDTOOLS (NONPOWERED)
Asarco Inc · Caught in, under or between a moving and a stationary object
WHILE TIGHTENING CHAIR LINER BOLTS ON THE NORTH SAG MILL, EMPLOYEE PICHED HIS LEFT RING FINGER BETWEEN THE WRENCH AND THE BEARING CAP. EMPLOYEE'S INJURY REQUIRED STITCHES.
October 4, 1999AZ · Metal/Non-Metalmaintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service techMACHINERY
Asarco Inc · Caught in, under or between a moving and a stationary object
WHILE REMOVING LINER BOLTS FROM A BALL MILL. EE PINCHED HIS FINGER BETWEEN THE JACK HAMMER AND A BEAM.
September 5, 1999AZ · Metal/Non-Metalmaintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service techHANDLING OF MATERIALS
WHIEL SHOVELING ROCK OUT OF A SKIP BOX INTO ANOTHER SKIP BOX. SHE STRAINED HER RIGHT ELBOW. SHE STARTED PHYSICAL THERAPY 9-29-99.
June 9, 1999AZ · Metal/Non-Metalwarehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operatorHANDTOOLS (NONPOWERED)
Asarco Inc · Caught in, under or between a moving and a stationary object
WHILE ATTEMPTING TO UNPLUG #131 FEEDER WITH A SCALING BAR. EE PINCHED HIS LEFT INDEX FINGER BETWEEN THE EDGE OF THE DOOR AND THE SCALING BAR.
January 26, 1999AZ · Metal/Non-Metalmaintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service techHANDLING OF MATERIALS
Asarco Inc · Caught in, under or between a moving and a stationary object
WHILE INSTALLING A 6'X2' TALL METAL PLATE ON THE FEED END OF THE SPARE DOUBLE DECK SCREEN, EE CAUGHT HIS RIGHT LITTLE FINGER BETWEEN THE PLATE AND DOUBLE DECK FRAME.
Show 38 earlier incidentsHide earlier incidents
1998 · 3 incidents
May 27, 1998AZ · Metal/Non-Metalmaintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service techHANDLING OF MATERIALS
WHILE REMOVING NUTS FROM A CRUSHER SPIDER RING AT THE PRIMARY CRUSHER, HE STRAINED HIS RIGHT SHOULDER.
March 31, 1997AZ · Metal/Non-Metalmaintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service techHANDLING OF MATERIALS
Asarco Inc · Caught in, under or between (Not Elsewhere Classified)
WHILE CHECKING ROLLERS ON #134 CONVEYOR, HE FRACTURED HIS RIGHT ARM.
March 25, 1997AZ · Metal/Non-Metallaborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitmanHANDLING OF MATERIALS
Asarco Inc · Caught in, under or between (Not Elsewhere Classified)
WHILE INSTALLING AN 8" VALVE, HE PINCHED HIS LEFT THUMB BETWEEN THE PUMP AND THE FLANGE.
1996 · 2 incidents
October 9, 1996AZ · Metal/Non-Metalmaintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service techHANDLING OF MATERIALS
Asarco Inc · Caught in, under or between a moving and a stationary object
WHILE ADJUSTING THE ROLLER CONVEYOR DURING A MILL LINER JOB, EE CAUGHT HIS LITTLE FINGER BETWEEN THE CONVEYOR AND STAND.
April 22, 1996AZ · Metal/Non-Metalmaintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service techPOWERED HAULAGE
Asarco Inc · Caught in, under or between (Not Elsewhere Classified)
WHILE CHECKING IDLERS ON #136 CONVEYOR, EE SLIPPED ON THE DIAMOND PLATER WALKWAY CAUSING HIS LEFT ARM TO GET CAUGHT BETWEEN THE IDLER AND THE BELT. EE RECEIVED A BROKEN ARM IN THE PROCESS.
1995 · 7 incidents
November 14, 1995AZ · Metal/Non-Metalmaintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service techHANDTOOLS (NONPOWERED)
Asarco Inc · Caught in, under or between a moving and a stationary object
WHILE INSTALLING A RUBBER GROMET OF A MILL SCREEN, HE PINCHED HIS LEFT THUMB BETWEEN A PRY BAR AND THE SCREEN. HE RECIEVED A TUFT FRACTURE TO THE THUMB.
July 1, 1995AZ · Metal/Non-Metalmaintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service techHANDLING OF MATERIALS
Asarco Inc · Caught in, under or between a moving and a stationary object
WHILE DISASSEMBLING A PUMP BARREL ASSEMBLY EE SMASHED HIS RIGHT THUMB
June 16, 1995AZ · Metal/Non-Metalmaintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service techHANDLING OF MATERIALS
WHILE CLEANING UIP ON A CONVEYOR BELT, EE HAD SOME DUST BLOW INTO HIS LEFT EYE.
April 12, 1995AZ · Metal/Non-Metalmaintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service techHANDLING OF MATERIALS
Asarco Inc · Caught in, under or between a moving and a stationary object
WHILE WORKING ON THE MAIN SHAFT IF THE CRUSHER HEAD CENTER A PIECE OF DRY ICE SLID DOWN THE SHAFT & CAUGHT EE RT THUMB BETWEEN THE DRY ICE & THE HAND RAIL CAUSING A LACERATION TO HIS THUMB THE THUMB RECEIVED SUTURES
March 23, 1995AZ · Metal/Non-Metalwarehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operatorHANDLING OF MATERIALS
VICTIM WAS OPERATING HYRAULIC JACK WHEN A PIN HOLE DEVELOPED IN ONE OF THE LINES. THE STREAM OF HYRAULIC OIL STRUCK HIS RIGHT BICEP CAUSING A PUNCTURE WOUND.
1994 · 6 incidents
October 28, 1994AZ · Metal/Non-Metalmaintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service techSLIP OR FALL OF PERSON
WHILE A CO-WORKER WAS CUTTING BOLTS ON SKIRT RUBBER CLAMPS, INJURED WAS REPLACING THE BOLTS. OXYGEN WAS APPLIED TO CUT THE BOLTS & DUST WAS BLOWN INTO INJURED'S RIGHT EYE. PRESCRIPTION EYE DRO PS WERE GIVEN. NO LOST TIME.
August 23, 1994AZ · Metal/Non-Metalwarehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operatorMACHINERY
WHILE TIGHTENING DISCHARGE END LINER BOLTS, THE IMPACT AIR LINE BLEW APART WHERE IT THREADS INTO THE IMPACT CAUSING AIR AND DEBRIS TO HIT HIM IN THE LEFT EYE.
June 12, 1994AZ · Metal/Non-Metalmaintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service techHANDLING OF MATERIALS
WHILE LAYING DOWN TO WELD OVERHEAD ON A SUPPORT BRACE. EE REACHED UP TO PULL HIMSELF TO A DIFFERENT POSITION AND IN DOING SO FELT A POPPING SENSATION IN HIS SHOULDER. DID NOT LOSE TIME TIL 4-2 7-94.
1993 · 4 incidents
July 11, 1993AZ · Metal/Non-Metalwarehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operatorSLIP OR FALL OF PERSON
Asarco Inc · Fall to lower level, (Not Elsewhere Classified)
INJURED ALLEGES SHE STOOD ON A MID-RAIL TO DUMP LUBE OIL INTO A SMALL LUBRICATION RESERVOIR AT THE LINE MILL & AS SHE STEPPED BACK SHE FELL FROM THE GRATING TO THE FLOOR INJURED STARTED LOSING TIME ON JULY 30 1993
May 19, 1993AZ · Metal/Non-Metalmaintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service techHANDTOOLS (NONPOWERED)
WHILE REPLACING SOME SKIRTING ON A CONVEYOR BELT, EE CUT HIMSELF WITH A KNIFE IN THE RIGHT LEG. HE WENT TO THE DOCTOR WHERE HE RECEIVED A COUPLE OF SUTURES.
April 14, 1993AZ · Metal/Non-Metalmaintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service techOTHER
WHILE CLEANING OUT A LOADING CHUTE IN #130 FEEDER WITH A 3# HAMMER, A PIECE OF STEEL CAME OFF THE HAMMER AND WENT INTO HIS LEFT THUMB.
1992 · 8 incidents
December 7, 1992AZ · Metal/Non-Metalmaintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service techHANDLING OF MATERIALS
55061S LOADING WORK TOOLS ONTO A CO VEHICLE WHICH WAS PARKED NEXT TO A FLAT CONCRETE SLAB EE STEPPED FROM THE CONRETE SLAB TO THE ADJOINING DIRT SURFACE THE DIRT WAS LOSE AND THE EE S ANKLE BU 32354 UNDER HIS WEIGHT.
August 6, 1992AZ · Metal/Non-Metalwarehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operatorHANDLING OF MATERIALS
WHILE POUNDING ON COLUMN FEED LINE INJURED STRUCK AND FRACTURD TUFT OF LEFT RING FINGER TIP.
March 4, 1992AZ · Metal/Non-Metalmaintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service techSLIP OR FALL OF PERSON
Asarco Inc · Fall to lower level, (Not Elsewhere Classified)
WHILE PULLING ON LINER FROM A SAG MILL FEED CHUTE TO REMOVE IT THE LINER FORCED EE HE FELL THRU A HOLE OT THE GROUND LEVEL.
February 5, 1992AZ · Metal/Non-Metallaborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitmanMACHINERY
ATTACHING THE CRANE HOOK TO THE ROCK SKIP,A ROCK FELL FROM THE CRANE STRIKING INJ MOUTH.
February 1, 1992AZ · Metal/Non-Metalwarehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operatorHANDTOOLS (NONPOWERED)
Asarco Inc · Caught in, under or between a moving and a stationary object
CLOSING A VALVE ON A VACUUM LINE WITH A PIPE WRENCH,INJ PINCHED RIGHT RING FINGER WHEN THE WRENCH SLIPPED.THIS RESULTED IN A TUFT FRACTURE OF THE RIGHT RING FINGER.
1991 · 1 incident
October 8, 1991AZ · Metal/Non-Metallaborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitmanSLIP OR FALL OF PERSON