# Relationship history for MSHA mine 1512102

Current hierarchy: **Joseph Warney → Kentucky Colonel Coal Company → Surface Mine #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:** Kentucky Colonel Coal Company → Surface Mine #1; 1979-10-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Joseph Warney → Surface Mine #1; 1979-10-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Joseph Warney → Kentucky Colonel Coal Company; 1979-10-01 to current/open; source msha-controller-operator-history