# Relationship history for MSHA mine 2602073

Current hierarchy: **Neil  Jacobson → Custom Crushing Inc → Goldstrike 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: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **operator_operates_mine:** Eldorado Rock Products → Goldstrike Mine; 1988-08-01 to 1996-06-30; source msha-controller-operator-history
- **controller_controls_mine:** Gregory L  Hess → Goldstrike Mine; 1988-08-01 to 1996-06-30; source msha-controller-operator-history
- **controller_controls_operator:** Gregory L  Hess → Eldorado Rock Products; 1988-08-01 to 1996-06-30; source msha-controller-operator-history
- **operator_operates_mine:** Custom Crushing Inc → Goldstrike Mine; 1996-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Neil  Jacobson → Goldstrike Mine; 1996-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Neil  Jacobson → Custom Crushing Inc; 1996-07-01 to current/open; source msha-controller-operator-history