# Relationship history for MSHA mine 4405094

Current hierarchy: **Westmoreland Coal Company → Westmoreland Coal Company → Dixie 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:** Elkins Charles C Et Al → Dixie Mine; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Westmoreland Coal Company → Dixie Mine; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Elkins Energy Corp → Dixie Mine; 1978-08-01 to 1979-01-31; source msha-controller-operator-history
- **controller_controls_operator:** Elkins Charles C Et Al → Elkins Energy Corp; 1978-08-01 to 1979-01-31; source msha-controller-operator-history
- **operator_operates_mine:** G B Corp → Dixie Mine; 1979-02-01 to 1981-02-01; source msha-controller-operator-history
- **controller_controls_mine:** Betty B Coal Company Inc → Dixie Mine; 1979-02-01 to 1981-02-01; source msha-controller-operator-history
- **controller_controls_operator:** Betty B Coal Company Inc → G B Corp; 1979-02-01 to 1981-02-01; source msha-controller-operator-history
- **operator_operates_mine:** Dixie Energy Corp → Dixie Mine; 1981-02-02 to 1988-09-07; source msha-controller-operator-history
- **controller_controls_mine:** Witt Floyd W Jr → Dixie Mine; 1981-02-02 to 1988-09-07; source msha-controller-operator-history
- **controller_controls_operator:** Witt Floyd W Jr → Dixie Energy Corp; 1981-02-02 to 1988-09-07; source msha-controller-operator-history
- **operator_operates_mine:** Pine Branch Energy Inc → Dixie Mine; 1988-09-08 to 1989-02-19; source msha-controller-operator-history
- **controller_controls_mine:** Maggard Carlos J → Dixie Mine; 1988-09-08 to 1989-02-19; source msha-controller-operator-history
- **controller_controls_operator:** Maggard Carlos J → Pine Branch Energy Inc; 1988-09-08 to 1989-02-19; source msha-controller-operator-history
- **operator_operates_mine:** Westmoreland Coal Company → Dixie Mine; 1989-02-20 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Westmoreland Coal Company → Westmoreland Coal Company; 1989-02-20 to current/open; source msha-controller-operator-history