# Relationship history for MSHA mine 4606470

Current hierarchy: **Avx Inc → Omega Mining Company Inc → Omega Mine #100**

- 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:** Omega Mining Company Inc → Omega Mine #100; 1982-01-01 to 1986-01-31; source msha-controller-operator-history
- **controller_controls_mine:** Hardesty John R Jr & John P Boyle → Omega Mine #100; 1982-01-01 to 1986-01-31; source msha-controller-operator-history
- **controller_controls_operator:** Hardesty John R Jr & John P Boyle → Omega Mining Company Inc; 1982-01-01 to 1986-01-31; source msha-controller-operator-history
- **operator_operates_mine:** Omega Mining Company Inc → Omega Mine #100; 1986-02-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Avx Inc → Omega Mine #100; 1986-02-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Avx Inc → Omega Mining Company Inc; 1986-02-01 to current/open; source msha-controller-operator-history