# Relationship history for MSHA mine 4606076

Current hierarchy: **Muncy Billy J & Danny → Muncy Mining Company Inc → #19**

- 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:** Mullins Troy & Thurman → #19; 1973-12-18 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Mullins Coal Company → #19; 1979-10-01 to 1984-07-23; source msha-controller-operator-history
- **controller_controls_operator:** Mullins Troy & Thurman → Mullins Coal Company; 1979-10-01 to 1984-07-23; source msha-controller-operator-history
- **operator_operates_mine:** Buckhorn Mining Corp → #19; 1984-07-24 to 1985-08-11; source msha-controller-operator-history
- **controller_controls_mine:** Walker Loyd E → #19; 1984-07-24 to 1985-08-11; source msha-controller-operator-history
- **controller_controls_operator:** Walker Loyd E → Buckhorn Mining Corp; 1984-07-24 to 1985-08-11; source msha-controller-operator-history
- **controller_controls_mine:** Rasnake Billy H → #19; 1985-01-16 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Energy Sales Inc → #19; 1985-08-12 to 1986-12-11; source msha-controller-operator-history
- **controller_controls_mine:** Addair Glenn A → #19; 1985-08-12 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Addair Glenn A → Energy Sales Inc; 1985-08-12 to 1986-12-11; source msha-controller-operator-history
- **operator_operates_mine:** R A O Coal Company Inc → #19; 1986-12-12 to 1988-03-28; source msha-controller-operator-history
- **controller_controls_operator:** Rasnake Billy H → R A O Coal Company Inc; 1986-12-12 to 1988-03-28; source msha-controller-operator-history
- **controller_controls_mine:** Muncy Billy J & Danny → #19; 1987-12-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Charlene Enterprises Inc → #19; 1988-03-29 to 1989-04-21; source msha-controller-operator-history
- **controller_controls_mine:** Johnson James → #19; 1988-03-29 to 1989-04-21; source msha-controller-operator-history
- **controller_controls_operator:** Johnson James → Charlene Enterprises Inc; 1988-03-29 to 1989-04-21; source msha-controller-operator-history
- **operator_operates_mine:** Charlene Enterprises Inc → #19; 1989-04-22 to 1989-09-04; source msha-controller-operator-history
- **controller_controls_mine:** Cooley Ronnie → #19; 1989-04-22 to 1989-09-04; source msha-controller-operator-history
- **controller_controls_operator:** Cooley Ronnie → Charlene Enterprises Inc; 1989-04-22 to 1989-09-04; source msha-controller-operator-history
- **operator_operates_mine:** Muncy Mining Company Inc → #19; 1989-09-05 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Muncy Billy J & Danny → Muncy Mining Company Inc; 1989-09-05 to current/open; source msha-controller-operator-history