MSHA DATABASEMSHA records · 16 contributing sources · snapshot Oct 18, 2026

MINE DETAILS

MISSION/SAN XAVIER/EISENHOWER

ActiveSurfaceCopper Ore NEC
MSHA MINE ID0200135
LOCATIONPima, AZ
PUBLIC RECORD18,845 linked rows

LOCATION

Mine location

1 of 1 mine with usable MSHA coordinates. Select a marker to open a mine.

Mine coordinates

2025-01-01 – 2026-10-18Applies to production, safety and portfolio metrics. Silica samples have separate filters.

Violations

137

36 significant & substantial (S&S)

  1. 2025 Q11
  2. 2025 Q224
  3. 2025 Q30
  4. 2025 Q41
  5. 2026 Q151
  6. 2026 Q260
  7. 2026 Q30
  8. 2026 Q4 *0

Accident records

14

0 records classified as fatality

  1. 2025 Q12
  2. 2025 Q22
  3. 2025 Q32
  4. 2025 Q42
  5. 2026 Q10
  6. 2026 Q24
  7. 2026 Q32
  8. 2026 Q4 *0

Proposed penalties · USD

241,655.00

137 of 137 violations with amounts

  1. 2025 Q1267
  2. 2025 Q2132,258
  3. 2025 Q3—
  4. 2025 Q4465
  5. 2026 Q179,311
  6. 2026 Q229,354
  7. 2026 Q3—
  8. 2026 Q4 *—

On-site inspection hours

472.25

21 inspections · 21 with hours

  1. 2025 Q18.75
  2. 2025 Q2103.00
  3. 2025 Q313.50
  4. 2025 Q418.25
  5. 2026 Q1147.75
  6. 2026 Q2173.75
  7. 2026 Q37.25
  8. 2026 Q4 *—
Quarterly safety data
QuarterViolationsS&SProposed USDAccident recordsFatality recordsInspectionsOn-site hours
2025-Q110267.002038.8
2025-Q22410132,258.00202103.0
2025-Q300—20213.5
2025-Q410465.0020418.3
2026-Q1511379,311.00004147.8
2026-Q2601329,354.00403173.8
2026-Q300—2037.3
2026-Q4 *00—000—

Most cited CFR sections

All violations issued in the selected period. Counts combine subsections.

Safety activity

  1. accident220262590026

    HANDLING OF MATERIALS · DAYS AWAY FROM WORK ONLY

    Accident narrative

    Employee was working with ladder when they pinched a finger at the back of the truck causing a laceration to their R pinky finger. 5 sutures required.

  2. accident220262370025

    HANDTOOLS (NONPOWERED) · DAYS RESTRICTED ACTIVITY ONLY

    Accident narrative

    Employee was aligning the top of the cyclones with a wrench when the wrench slipped out of position causing the cyclone top cover to cause a laceration to the R index finger.

  3. accident220261760018

    HANDLING OF MATERIALS · NO DYS AWY FRM WRK,NO RSTR ACT

    Accident narrative

    The injured employee was working with another employee to move a valve from one pallet to another. The valve slipped from the grasp of the helper's hand and came down on the injured employees right hand causing a crushing injury to the middle finger tip.

  4. accident220261690011

    HANDTOOLS (NONPOWERED) · DAYS RESTRICTED ACTIVITY ONLY

    Accident narrative

    Employee swung a hammer at a rigging strap, EE missed the rigging strap, and the momentum of the swing caused EE to strike the chute liner with EE's left hand causing the hammer to hit EE's L index finger. Gloves were worn. Six sutures were required.

  5. accident220261390016

    HANDTOOLS (NONPOWERED) · DAYS RESTRICTED ACTIVITY ONLY

    Accident narrative

    Employee was assisting with 518 hoist rope change out. While pushing on prybar to push the rope employee strained EE's L arm.

  6. accident220261050024

    SLIP OR FALL OF PERSON · DAYS RESTRICTED ACTIVITY ONLY

    Accident narrative

    Employee was walking through warehouse when their R knee strained due to pothole in walkway.

  7. accident220253170645

    HANDLING OF MATERIALS · DAYS RESTRICTED ACTIVITY ONLY

    Accident narrative

    Employee was screwing into plastic reputs. Due to prescribed antibiotics employee developed Photophobia.

  8. accident220253170425

    HANDTOOLS (NONPOWERED) · NO DYS AWY FRM WRK,NO RSTR ACT

    Accident narrative

    Employee was using a hammer on a metal bolt when debris went into R eye

  9. accident220252670025

    HANDLING OF MATERIALS · DAYS RESTRICTED ACTIVITY ONLY

    Accident narrative

    Employee picked up a plywood bulkhead for a concrete form and when they turned to put it in place it caused a strain in their back.

  10. accident220252370014

    SLIP OR FALL OF PERSON · DAYS AWAY FROM WORK ONLY

    Accident narrative

    An employee missed a step on the truck step ladder and fractured EE's right leg. EE was in the process of unloading a delivery to the Mission magazine when incident occurred.

  11. accident220251470026

    SLIP OR FALL OF PERSON · DAYS AWAY FROM WORK ONLY

    Accident narrative

    Employee was dismounting from equipment. While activating the ladder to exit, they began descending before the ladder had fully reached the ground. As a result, the ladder accelerated rapidly. This sudden movement caused employee to lose balance and fall sustaining injuries.

  12. accident220251490014

    HANDLING OF MATERIALS · NO DYS AWY FRM WRK,NO RSTR ACT

    Accident narrative

    On 05/08/25 employee struck in arm by foreign object did not report the incident. The following week the incident was reported. Foreign body removed. 4 stitches received. Notified 05/27/2025 that the injury was accepted as an industrial injury.

  13. accident220250570011

    SLIP OR FALL OF PERSON · DAYS RESTRICTED ACTIVITY ONLY

    Accident narrative

    Employee was washing under the 219 ball mill. Employee crossed over the 212 cyclone feed pump discharge line by stepping on the angle iron brace supporting the pipe. While stepping over, employee slipped and rolled an ankle. Employee was placed on restricted duty 02/18/2025.

  14. accident220250560019

    DISORDERS (REPEATED TRAUMA) · OCCUPATNAL ILLNESS NOT DEG 1-6

    Accident narrative

    Employee was diagnosed with a standard threshold shift by Dr. on 02/13/2025. The hearing loss is consistent with noise induced loss in the right ear.

Safety sources and definitions

MSHA Violations (issue date), Accidents (accident date), and Inspections (begin date). Snapshot 2026-10-18.

Counts describe published rows, including contractor records; accident records are not distinct incidents or numbers of people injured.

Zero means no matching records in the imported sources, not proof of no events. Historical coverage differs by source; absence before a source begins reporting is not a zero incident rate. Invalid or absent dates and records after the snapshot are excluded.

S&S means SIG_SUB=Y. Fatality records use DEGREE_INJURY_CD=01. Proposed penalties are not final assessed or paid amounts; missing dollar values are omitted.

Inspection hours are SUM_TOTAL_ON_SITE_HOURS attributed to the inspection start date, without supervisor/trainee hours. Missing hours are omitted; a started inspection may still be open.

Portfolio totals use current mine membership, including events before the current owner or operator's tenure.

CFR headings link to the current Title 30 index; they are not historical legal determinations.

OWNERSHIP

Operator and controller history

Current ownership comes from MSHA Mines. Historical start and end dates come from MSHA Controller and Operator History.

CURRENT HIERARCHYGrupo Mexico S A B de C V → ASARCO LLC, a Delaware Limited Liability Company → MISSION/SAN XAVIER/EISENHOWER
HISTORY RECORDS26 relationships
INTERVAL CHECKPASScontroller/operator overlap
—

Grupo Mexico S A B de C VcontrolsASARCO LLC, a Delaware Limited Liability CompanyoperatesMISSION/SAN XAVIER/EISENHOWER

msha-controller-operator-history · controller/operator co-tenure derived on mine 0200135
—

Asarco InccontrolsAsarco IncoperatesMISSION/SAN XAVIER/EISENHOWER

msha-controller-operator-history · controller/operator co-tenure derived on mine 0200135
Other historical summaries · source-specific periods

RECORD SUMMARY

Production, safety and enforcement

These summaries use the periods stated on each card, independently of the reporting period above.

01 / SAFETYwatch

Accidents and injuries

446 historical accident/injury rows; 1 coded fatalities and 8,813 lost days across the published record.

ACCIDENT + INJURY RECORD63 since 2021
accidentsmine-production-quarterly
02 / COMPLIANCEwatch

Violations and penalties

1,749 violation rows across the full record; 449 carry an S&S flag and $1,393,744 appears in current assessed amounts.

ENFORCEMENT ACTIVITY372 since 2021
inspectionsviolationsassessed-violationsorders-107a
03 / HEALTHwatch

Occupational health samples

427 personal; 59 area. 38 personal-sample rows have a published C/E ratio above 1; 0 noise rows have an action-level or PEL dose above 100%. These are separate measures, not a silica exceedance count. Silica results and sample status are shown separately.

OCCUPATIONAL EXPOSURE486 samples
personal-health-samplesarea-samples
04 / PRODUCTIONcontext

Quarterly production and employment

322K employee hours and 607 summed average employees across reported subunits in the latest published quarter.

2026-Q20 tons
mine-production-quarterlymine-production-yearly
05 / LEGALwatch

Contests, conferences and decisions

235 contested-violation rows, 235 civil-penalty docket/decision rows, and 90 conference records linked by issuance number.

POST-ISSUANCE LIFECYCLE560 linked rows
conferencescontested-violationscivil-penalty-dockets-decisions
06 / CONTRACTORScontext

Contractors

Contractors are linked through this mine’s violation or accident records. Their production and hours cover all their operations, so they are not included in this mine’s totals.

ENTITY-LEVEL CONTEXT77 linked entities
contractor-production-quarterlycontractor-production-yearlyaccidentsviolations
07 / INSPECTIONScontext

Inspections

302 inspection events and 13K published inspection hours across the historical record.

OVERSIGHT COVERAGE100 since 2021
inspectionsviolations

HEALTH SAMPLING

Silica and quartz

Matching records00 coal · 0 personal · 0 area
Sample status0 not voided0 voided · 0 status not reported
Personal samples with C/E > 1—0 published ratios · not a citation count
2026 · No reported dates in this selection
Date / sampleDataset / analyteOccupation / areaMeasurementSample statusPublished action
No silica records match these filters. Missing samples do not establish safe conditions.
Sources and interpretation
  • Coal means use numeric concentrations from samples marked not voided, excluding control/invalid sample types and dates after the snapshot. Missing values remain null; reported zeroes remain zero.
  • Quarterly means describe available samples, not mine-wide or worker-average exposure. Quarters with no eligible measurements remain empty; the current quarter is partial.
  • Personal C/E is MSHA's published concentration-to-limit ratio. A value above 1 is not by itself a citation or a determination under the 2024 silica rule. Personal and area files do not publish a void-status field.
  • Area records include bulk-dust analyses and are kept separate from personal exposure results. Their concentration units are not specified in the source dictionary.
  • Missing samples do not establish safe conditions. Coal quartz percentage and concentration are separate measures. No compliance threshold is inferred for coal samples.

Coal quartz field definitions ↗Metal/nonmetal personal field definitions ↗Metal/nonmetal area field definitions ↗

EIA + TITLE 30

EIA production and cited regulations

EIA annual figures are reported separately from MSHA. Regulation links use the current eCFR snapshot.

RECENT PUBLIC RECORDS

Recent violations and samples

Latest records retained for inspection; aggregates above use the full source history.

VIOLATIONS12 latest shown
973305356.11001Citation
503329856.14100(b)Citation
973305256.12030Citation
503329756.12030Citation
503329656.14115(b)Citation
973305156.12032Citation
973305056.12032S&S
973304956.12008Citation
OTHER HEALTH SAMPLES8 latest shown

Coal dust, noise and other contaminants. Silica records above ↑

Respirable dust, <.1mgTruck Driver
C/E: 00.00Concentration: 0000.00 · limit: 0000.00Source unit unspecified
Respirable dust, <.1mgTruck Driver
C/E: 00.00Concentration: 0000.00 · limit: 0000.00Source unit unspecified
Respirable dust, <.1mgTruck Driver
C/E: 00.00Concentration: 0000.00 · limit: 0000.00Source unit unspecified
Respirable dust, <.1mgDrill Operator, Rotary
C/E: 00.00Concentration: 0000.00 · limit: 0000.00Source unit unspecified
Respirable dust, <.1mgBulldozer Operator
C/E: 00.00Concentration: 0000.00 · limit: 0000.00Source unit unspecified
Respirable dust, <.1mgShovel Operator
C/E: 00.00Concentration: 0000.00 · limit: 0000.00Source unit unspecified
Respirable dust, <.1mgBulldozer Operator
C/E: 00.00Concentration: 0000.00 · limit: 0000.00Source unit unspecified
Cobalt dustShovel Operator
C/E: 00.00Concentration: 0000.00 · limit: 0100.00Source unit unspecified

SOURCE COVERAGE

Reporting dates and coverage

16 datasets contain linked records. Missing datasets are listed below.

DATASETROWSWINDOWSTATUS
Accident, Injuries, and Illnessessafety · contractors446Jan 6, 2000—Sep 10, 2026mine-keyed
Addresses of Recordidentity · logistics1Nov 3, 2016—Nov 3, 2016mine-keyed
Assessed Violationscompliance · legal1,736Jan 4, 2000—May 7, 2026mine-keyed
Civil Penalty Dockets and Decisionscompliance · legal235Feb 13, 2007—Feb 27, 2026mine-keyed
Coal Dust Sampleshealth · safety—No published rowsabsent / not applicable
Conferencescompliance · legal90Oct 26, 2001—Oct 4, 2019mine-keyed
Contested Violationscompliance · legal235Mar 1, 2006—May 5, 2026mine-keyed
Contractor Employment and Production — Quarterlycontractors · production · safety10,847Not published—Not publishedentity-linked
Contractor Employment and Production — Yearlycontractors · production · safety2,322Not published—Not publishedentity-linked
Controller and Operator Historyidentity · compliance2Jan 1, 1950—Nov 17, 1999mine-keyed
Mine Employment and Production — Quarterlyproduction · safety · compliance313Not published—Not publishedmine-keyed
Mine Employment and Production — Yearlyproduction · safety · compliance80Not published—Not publishedmine-keyed
Inspectionssafety · compliance302Jan 4, 2000—Sep 23, 2026mine-keyed
Minesidentity · production · logistics1Not published—Not publishedmine-keyed
Metal and Nonmetal Area Sampleshealth · safety59Jan 14, 2013—May 12, 2026mine-keyed
Metal and Nonmetal Personal Health Sampleshealth · safety427Mar 14, 2006—Nov 25, 2025mine-keyed
Noise Sampleshealth · safety · equipment—No published rowsabsent / not applicable
Quartz Samples — Coalhealth · safety—No published rowsabsent / not applicable
Violationscompliance · safety · legal1,749Jan 4, 2000—May 7, 2026mine-keyed
107(a) Orders Issuedsafety · compliance—No published rowsabsent / not applicable

NOTES

Limitations

  • Contractor production is entity-level and is never represented as mine-attributable.
  • Missing rows can mean no event, publication delay, identity mismatch, or inapplicability.