# Relationship history for MSHA mine 2601726

Current hierarchy: **Johnson Charles → Western Minerals Productions Inc → Treasure Trove 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: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **operator_operates_mine:** Darrell Claiborne Construction → Treasure Trove Mine; 1981-04-01 to 1985-05-01; source msha-controller-operator-history
- **controller_controls_mine:** Claiborne Darrell → Treasure Trove Mine; 1981-04-01 to 1985-05-01; source msha-controller-operator-history
- **controller_controls_operator:** Claiborne Darrell → Darrell Claiborne Construction; 1981-04-01 to 1985-05-01; source msha-controller-operator-history
- **operator_operates_mine:** Western Minerals Productions Inc → Treasure Trove Mine; 1985-05-02 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Johnson Charles → Treasure Trove Mine; 1985-05-02 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Johnson Charles → Western Minerals Productions Inc; 1985-05-02 to current/open; source msha-controller-operator-history