# Relationship history for MSHA mine 1510086

Current hierarchy: **Faulkner Arlis B → J & H Coal Company Corp → No 4 Strip**

- 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:** Mc Cullah Hubert & Jerome → No 4 Strip; 1974-10-31 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** J & H Coal Company Inc → No 4 Strip; 1976-11-01 to 1980-01-27; source msha-controller-operator-history
- **controller_controls_operator:** Mc Cullah Hubert & Jerome → J & H Coal Company Inc; 1976-11-01 to 1980-01-27; source msha-controller-operator-history
- **operator_operates_mine:** J & H Coal Company Corp → No 4 Strip; 1980-01-28 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Faulkner Arlis B → No 4 Strip; 1980-01-28 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Faulkner Arlis B → J & H Coal Company Corp; 1980-01-28 to current/open; source msha-controller-operator-history