# Relationship history for MSHA mine 1512556

Current hierarchy: **Reese Thomas L → Asher & Robinson Enterprises 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:** Asher-Robinson Enterprise Inc → Mine #1; 1980-10-01 to 1981-02-11; source msha-controller-operator-history
- **controller_controls_mine:** Asher W Forrest Et Al → Mine #1; 1980-10-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Asher W Forrest Et Al → Asher-Robinson Enterprise Inc; 1980-10-01 to 1981-02-11; source msha-controller-operator-history
- **operator_operates_mine:** W A & M Mining Inc → Mine #1; 1981-02-12 to 1981-06-18; source msha-controller-operator-history
- **controller_controls_mine:** Mc Coy Myron → Mine #1; 1981-02-12 to 1981-06-18; source msha-controller-operator-history
- **controller_controls_operator:** Mc Coy Myron → W A & M Mining Inc; 1981-02-12 to 1981-06-18; source msha-controller-operator-history
- **operator_operates_mine:** Asher & Robinson Enterprises Inc → Mine #1; 1981-06-19 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Reese Thomas L → Mine #1; 1981-06-19 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Reese Thomas L → Asher & Robinson Enterprises Inc; 1981-06-19 to current/open; source msha-controller-operator-history