# Relationship history for MSHA mine 1514877

Current hierarchy: **Taylor Coleman & Charles → C & T Coal Corp → Surface 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:** C & T Coal Corp → Surface No 1; 1984-09-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Taylor Coleman & Charles Et Al → Surface No 1; 1984-09-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Taylor Coleman & Charles Et Al → C & T Coal Corp; 1984-09-01 to current/open; source msha-controller-operator-history