# Relationship history for MSHA mine 0503119

Current hierarchy: **Iracoal Incorporated → Lodestar Energy Inc → Munger Canyon Mine**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **controller_controls_mine:** Occidental Petroleum Corp → Munger Canyon Mine; 1977-02-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Rogers Odell → Munger Canyon Mine; 1977-07-20 to 1979-12-31; source msha-controller-operator-history
- **operator_operates_mine:** Black Hawk Coal Company → Munger Canyon Mine; 1977-10-01 to 1979-12-31; source msha-controller-operator-history
- **controller_controls_operator:** Rogers Odell → Black Hawk Coal Company; 1977-10-01 to 1979-12-31; source msha-controller-operator-history
- **operator_operates_mine:** Sheridan Enterprises Inc → Munger Canyon Mine; 1980-01-01 to 1981-10-21; source msha-controller-operator-history
- **controller_controls_operator:** Occidental Petroleum Corp → Sheridan Enterprises Inc; 1980-01-01 to 1981-10-21; source msha-controller-operator-history
- **operator_operates_mine:** Salt Creek Mining Company → Munger Canyon Mine; 1981-10-22 to 1992-10-15; source msha-controller-operator-history
- **controller_controls_mine:** Loma Mining Company et al → Munger Canyon Mine; 1981-10-22 to 1992-10-15; source msha-controller-operator-history
- **controller_controls_operator:** Loma Mining Company et al → Salt Creek Mining Company; 1981-10-22 to 1992-10-15; source msha-controller-operator-history
- **operator_operates_mine:** Grand Valley Coal Company → Munger Canyon Mine; 1992-10-16 to 1997-07-26; source msha-controller-operator-history
- **controller_controls_mine:** AOI Coal Company → Munger Canyon Mine; 1992-10-16 to 1997-07-26; source msha-controller-operator-history
- **controller_controls_operator:** AOI Coal Company → Grand Valley Coal Company; 1992-10-16 to 1997-07-26; source msha-controller-operator-history
- **controller_controls_mine:** (Donald) Todd  Kiscaden et al → Munger Canyon Mine; 1994-05-20 to 1999-07-14; source msha-controller-operator-history
- **controller_controls_mine:** Iracoal Incorporated → Munger Canyon Mine; 1997-01-31 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Grand Valley Coal Company → Munger Canyon Mine; 1997-07-27 to 1999-07-14; source msha-controller-operator-history
- **controller_controls_operator:** (Donald) Todd  Kiscaden et al → Grand Valley Coal Company; 1997-07-27 to 1999-07-14; source msha-controller-operator-history
- **operator_operates_mine:** Lodestar Energy Inc → Munger Canyon Mine; 1999-07-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Iracoal Incorporated → Lodestar Energy Inc; 1999-07-15 to current/open; source msha-controller-operator-history