# Relationship history for MSHA mine 1301754

Current hierarchy: **American Industries & Resources Corp → American Coals Corp → American Coals Corp**

- 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

- **operator_operates_mine:** Mc Conville Coal Corp → American Coals Corp; 1976-12-01 to 1986-10-20; source msha-controller-operator-history
- **controller_controls_mine:** Mc Conville Owen P Iii → American Coals Corp; 1976-12-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Mc Conville Owen P Iii → Mc Conville Coal Corp; 1976-12-01 to 1986-10-20; source msha-controller-operator-history
- **operator_operates_mine:** American Coals Corp → American Coals Corp; 1986-10-21 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** American Industries & Resources Corp → American Coals Corp; 1986-10-21 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** American Industries & Resources Corp → American Coals Corp; 1986-10-21 to current/open; source msha-controller-operator-history