# Relationship history for MSHA mine 1512447

Current hierarchy: **Martin Gaylord G → Con Mar Mining Company Inc → Conmar Mining Co Inc Mine #1**

- 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

- **operator_operates_mine:** New Decade Mining Inc → Conmar Mining Co Inc Mine #1; 1980-07-01 to 1980-12-30; source msha-controller-operator-history
- **controller_controls_mine:** Benjamin  Hampton → Conmar Mining Co Inc Mine #1; 1980-07-01 to 1980-12-30; source msha-controller-operator-history
- **controller_controls_operator:** Benjamin  Hampton → New Decade Mining Inc; 1980-07-01 to 1980-12-30; source msha-controller-operator-history
- **controller_controls_mine:** Everhard Paul → Conmar Mining Co Inc Mine #1; 1980-10-01 to 1984-09-25; source msha-controller-operator-history
- **operator_operates_mine:** John Paul Fuels Inc → Conmar Mining Co Inc Mine #1; 1980-12-31 to 1984-09-25; source msha-controller-operator-history
- **controller_controls_operator:** Everhard Paul → John Paul Fuels Inc; 1980-12-31 to 1984-09-25; source msha-controller-operator-history
- **operator_operates_mine:** Conmar Mining Company Inc → Conmar Mining Co Inc Mine #1; 1984-09-26 to 1986-09-03; source msha-controller-operator-history
- **controller_controls_mine:** Breeding Vance → Conmar Mining Co Inc Mine #1; 1984-09-26 to 1986-09-03; source msha-controller-operator-history
- **controller_controls_operator:** Breeding Vance → Conmar Mining Company Inc; 1984-09-26 to 1986-09-03; source msha-controller-operator-history
- **operator_operates_mine:** Stacy & Adkins Coal Company → Conmar Mining Co Inc Mine #1; 1986-09-04 to 1987-03-16; source msha-controller-operator-history
- **controller_controls_mine:** Adkins William & Roger Stacy → Conmar Mining Co Inc Mine #1; 1986-09-04 to 1987-03-16; source msha-controller-operator-history
- **controller_controls_operator:** Adkins William & Roger Stacy → Stacy & Adkins Coal Company; 1986-09-04 to 1987-03-16; source msha-controller-operator-history
- **operator_operates_mine:** Con Mar Mining Company Inc → Conmar Mining Co Inc Mine #1; 1987-03-17 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Martin Gaylord G → Conmar Mining Co Inc Mine #1; 1987-03-17 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Martin Gaylord G → Con Mar Mining Company Inc; 1987-03-17 to current/open; source msha-controller-operator-history