# Relationship history for MSHA mine 4401508

Current hierarchy: **Harris James R → P & J Coal Company Inc → No 1-Mine**

- 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:** H M Mc Glothlin Coal Company Inc → No 1-Mine; 1950-01-01 to 1973-03-01; source msha-controller-operator-history
- **controller_controls_mine:** Mc Glothlin Henry M → No 1-Mine; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Mc Glothlin Henry M → H M Mc Glothlin Coal Company Inc; 1950-01-01 to 1973-03-01; source msha-controller-operator-history
- **operator_operates_mine:** P & J Coal Company Inc → No 1-Mine; 1973-03-02 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Harris James R → No 1-Mine; 1973-03-02 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Harris James R → P & J Coal Company Inc; 1973-03-02 to current/open; source msha-controller-operator-history