# Relationship history for MSHA mine 1601323

Current hierarchy: **Gilbert C  James; Richard D Cloud → James Rock Co. LLC → James Rock Co. LLC**

- 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:** James D  Crooks → James Rock Co. LLC; 1987-09-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Dpwp Sand & Gravel → James Rock Co. LLC; 1997-11-01 to 2005-11-14; source msha-controller-operator-history
- **controller_controls_operator:** James D  Crooks → Dpwp Sand & Gravel; 1997-11-01 to 2005-11-14; source msha-controller-operator-history
- **operator_operates_mine:** James Rock Co. LLC → James Rock Co. LLC; 2005-11-15 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Gilbert C  James et al → James Rock Co. LLC; 2005-11-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Gilbert C  James et al → James Rock Co. LLC; 2005-11-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Richard D Cloud et al → James Rock Co. LLC; 2005-11-15 to current/open; source msha-controller-operator-history