# Relationship history for MSHA mine 4404183

Current hierarchy: **Pittston Company → Paramont Coal Corp → Esserville Tipple**

- 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:** William D  Humphreys et al → Esserville Tipple; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Cumberland Collieries Inc → Esserville Tipple; 1975-09-29 to 1976-09-30; source msha-controller-operator-history
- **controller_controls_mine:** B Ray  Thompson → Esserville Tipple; 1975-09-29 to 1979-10-31; source msha-controller-operator-history
- **controller_controls_operator:** B Ray  Thompson → Cumberland Collieries Inc; 1975-09-29 to 1976-09-30; source msha-controller-operator-history
- **controller_controls_mine:** Barber Oil Corp → Esserville Tipple; 1976-09-21 to 1981-04-29; source msha-controller-operator-history
- **operator_operates_mine:** Paramont Mining Corp → Esserville Tipple; 1976-10-01 to 1981-03-31; source msha-controller-operator-history
- **controller_controls_operator:** Barber Oil Corp → Paramont Mining Corp; 1976-10-01 to 1981-03-31; source msha-controller-operator-history
- **operator_operates_mine:** Paramont Coal Corp → Esserville Tipple; 1981-04-01 to 1984-04-01; source msha-controller-operator-history
- **controller_controls_mine:** W R Grace Company et al → Esserville Tipple; 1981-04-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** W R Grace Company et al → Paramont Coal Corp; 1981-04-01 to 1984-04-01; source msha-controller-operator-history
- **controller_controls_operator:** M A Hanna Company et al → Paramont Coal Corp; 1981-04-01 to 1984-04-01; source msha-controller-operator-history
- **controller_controls_mine:** Hunsaker J Douglas & James M Gott → Esserville Tipple; 1983-10-01 to 1993-04-26; source msha-controller-operator-history
- **operator_operates_mine:** Greater Wise Inc → Esserville Tipple; 1984-04-02 to 1985-03-11; source msha-controller-operator-history
- **controller_controls_operator:** William D  Humphreys et al → Greater Wise Inc; 1984-04-02 to 1985-03-11; source msha-controller-operator-history
- **operator_operates_mine:** H & G Enterprises Inc → Esserville Tipple; 1985-03-12 to 1987-01-12; source msha-controller-operator-history
- **controller_controls_operator:** Hunsaker J Douglas & James M Gott → H & G Enterprises Inc; 1985-03-12 to 1987-01-12; source msha-controller-operator-history
- **controller_controls_mine:** Pittston Company → Esserville Tipple; 1986-06-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Paramont Coal Corp → Esserville Tipple; 1987-01-13 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Pittston Company → Paramont Coal Corp; 1987-01-13 to current/open; source msha-controller-operator-history