# Relationship history for MSHA mine 4404148

Current hierarchy: **Westmoreland Coal Company → Westmoreland Coal Company → West Fork Mine No 2 Portal**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **controller_controls_mine:** Westmoreland Coal Company → West Fork Mine No 2 Portal; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Cherokee Coal Company → West Fork Mine No 2 Portal; 1975-09-08 to 1977-07-31; source msha-controller-operator-history
- **controller_controls_mine:** Smoot Shelby & William Hawkins → West Fork Mine No 2 Portal; 1975-09-08 to 1977-07-31; source msha-controller-operator-history
- **controller_controls_operator:** Smoot Shelby & William Hawkins → Cherokee Coal Company; 1975-09-08 to 1977-07-31; source msha-controller-operator-history
- **operator_operates_mine:** Rita Ann Coal Corp → West Fork Mine No 2 Portal; 1977-08-01 to 1978-04-10; source msha-controller-operator-history
- **controller_controls_mine:** White Wilburn K → West Fork Mine No 2 Portal; 1977-08-01 to 1978-04-10; source msha-controller-operator-history
- **controller_controls_operator:** White Wilburn K → Rita Ann Coal Corp; 1977-08-01 to 1978-04-10; source msha-controller-operator-history
- **operator_operates_mine:** Rita Ann Coal Company → West Fork Mine No 2 Portal; 1978-04-11 to 1980-01-07; source msha-controller-operator-history
- **controller_controls_mine:** Elkins Charles C Et Al → West Fork Mine No 2 Portal; 1978-04-11 to 1980-01-07; source msha-controller-operator-history
- **controller_controls_operator:** Elkins Charles C Et Al → Rita Ann Coal Company; 1978-04-11 to 1980-01-07; source msha-controller-operator-history
- **operator_operates_mine:** Crystal Coal Corp → West Fork Mine No 2 Portal; 1980-01-08 to 1988-04-14; source msha-controller-operator-history
- **controller_controls_mine:** Davis Bernard C → West Fork Mine No 2 Portal; 1980-01-08 to 1988-04-14; source msha-controller-operator-history
- **controller_controls_operator:** Davis Bernard C → Crystal Coal Corp; 1980-01-08 to 1988-04-14; source msha-controller-operator-history
- **operator_operates_mine:** Westmoreland Coal Company → West Fork Mine No 2 Portal; 1988-04-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Westmoreland Coal Company → Westmoreland Coal Company; 1988-04-15 to current/open; source msha-controller-operator-history