# Relationship history for MSHA mine 0101932

Current hierarchy: **Chamblee Derrell → C & R Mining Company → Cat Hollow Strip**

- 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

- **operator_operates_mine:** C & R Mining Company → Cat Hollow Strip; 1978-09-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Chamblee Derrell Et Al → Cat Hollow Strip; 1978-09-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Chamblee Derrell Et Al → C & R Mining Company; 1978-09-01 to current/open; source msha-controller-operator-history