# Relationship history for MSHA mine 3002790

Current hierarchy: **James  Mc Gee; Richard  Castello → C & M Equipment Repair Llc → C & M GRAVEL**

- 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:** W J  Bokus → C & M GRAVEL; 1984-02-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** W J Bokus Industries Inc → C & M GRAVEL; 1987-06-01 to 2000-10-19; source msha-controller-operator-history
- **controller_controls_operator:** W J  Bokus → W J Bokus Industries Inc; 1987-06-01 to 2000-10-19; source msha-controller-operator-history
- **operator_operates_mine:** C & M Equipment Repair Llc → C & M GRAVEL; 2000-10-20 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** James  Mc Gee  et al → C & M GRAVEL; 2000-10-20 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** James  Mc Gee  et al → C & M Equipment Repair Llc; 2000-10-20 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Richard  Castello  et al → C & M Equipment Repair Llc; 2000-10-20 to current/open; source msha-controller-operator-history