# Relationship history for MSHA mine 4604465

Current hierarchy: **Occidental Petroleum Corp → Island Creek Coal Company → Mine 136-79**

- 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 → Mine 136-79; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Nutter Phil Sr → Mine 136-79; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Rogers Odell → Mine 136-79; 1973-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Mooney James S Sr Et Al → Mine 136-79; 1973-08-02 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Pine Rock Coals Inc → Mine 136-79; 1975-04-01 to 1977-03-10; source msha-controller-operator-history
- **controller_controls_operator:** Nutter Phil Sr → Pine Rock Coals Inc; 1975-04-01 to 1977-03-10; source msha-controller-operator-history
- **operator_operates_mine:** Rebel Coal Company Inc → Mine 136-79; 1977-03-11 to 1983-04-28; source msha-controller-operator-history
- **controller_controls_operator:** Rogers Odell → Rebel Coal Company Inc; 1977-03-11 to 1983-04-28; source msha-controller-operator-history
- **operator_operates_mine:** Monument Mining Corp → Mine 136-79; 1983-04-29 to 1985-03-20; source msha-controller-operator-history
- **controller_controls_mine:** Cantrell Calvin Darrell → Mine 136-79; 1983-04-29 to 1985-03-20; source msha-controller-operator-history
- **controller_controls_operator:** Cantrell Calvin Darrell → Monument Mining Corp; 1983-04-29 to 1985-03-20; source msha-controller-operator-history
- **operator_operates_mine:** Elm Coal Corp → Mine 136-79; 1985-03-21 to 1986-10-07; source msha-controller-operator-history
- **controller_controls_operator:** Mooney James S Sr Et Al → Elm Coal Corp; 1985-03-21 to 1986-10-07; source msha-controller-operator-history
- **operator_operates_mine:** Island Creek Coal Company → Mine 136-79; 1986-10-08 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Occidental Petroleum Corp → Island Creek Coal Company; 1986-10-08 to current/open; source msha-controller-operator-history