# Relationship history for MSHA mine 1514634

Current hierarchy: **Carter Earl & Jerry Lidington → D & W Coal Company → No 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: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **operator_operates_mine:** M & T Coal Company → No 1; 1984-05-01 to 1984-10-14; source msha-controller-operator-history
- **controller_controls_mine:** Mc Vey Frank Et Al → No 1; 1984-05-01 to 1984-10-14; source msha-controller-operator-history
- **controller_controls_operator:** Mc Vey Frank Et Al → M & T Coal Company; 1984-05-01 to 1984-10-14; source msha-controller-operator-history
- **operator_operates_mine:** D & W Coal Company → No 1; 1984-10-15 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Carter Earl & Jerry Lidington → No 1; 1984-10-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Carter Earl & Jerry Lidington → D & W Coal Company; 1984-10-15 to current/open; source msha-controller-operator-history