# Relationship history for MSHA mine 1508986

Current hierarchy: **Gibbs Cecil C → Les Juan Corp → Little Clear Creek 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

- **controller_controls_mine:** Gibbs Cecil C → Little Clear Creek Mine; 1974-11-08 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Les Juan Corp → Little Clear Creek Mine; 1975-09-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Gibbs Cecil C → Les Juan Corp; 1975-09-01 to current/open; source msha-controller-operator-history