# Relationship history for MSHA mine 4405345

Current hierarchy: **Compton William → Lynn K Coal Company Inc → #2 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:** Owens Jack → #2 Mine; 1977-10-28 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** H & T Coal Company Inc → #2 Mine; 1979-12-01 to 1980-08-03; source msha-controller-operator-history
- **controller_controls_operator:** Owens Jack → H & T Coal Company Inc; 1979-12-01 to 1980-08-03; source msha-controller-operator-history
- **operator_operates_mine:** Pine Ridge Coal Corp → #2 Mine; 1980-08-04 to 1982-05-10; source msha-controller-operator-history
- **controller_controls_mine:** Henry L  McKemy → #2 Mine; 1980-08-04 to 1982-05-10; source msha-controller-operator-history
- **controller_controls_operator:** Henry L  McKemy → Pine Ridge Coal Corp; 1980-08-04 to 1982-05-10; source msha-controller-operator-history
- **controller_controls_mine:** Compton William → #2 Mine; 1980-10-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Lynn K Coal Company Inc → #2 Mine; 1982-05-11 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Compton William → Lynn K Coal Company Inc; 1982-05-11 to current/open; source msha-controller-operator-history