# Relationship history for MSHA mine 1002060

Current hierarchy: **Zane M  Gillette → Gillette Sharp Corporation → Rodriguez Quarry**

- 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:** Gillette Sharp Corporation → Rodriguez Quarry; 2004-10-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Zane M  Gillette et al → Rodriguez Quarry; 2004-10-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Zane M  Gillette et al → Gillette Sharp Corporation; 2004-10-01 to current/open; source msha-controller-operator-history