# Relationship history for MSHA mine 3608930

Current hierarchy: **Jason  Shores; Walter  Parker → Shores & Parker → SHORES 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:** Shores & Parker → SHORES QUARRY; 2001-03-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Walter  Parker et al → SHORES QUARRY; 2001-03-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Walter  Parker et al → Shores & Parker; 2001-03-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jason  Shores et al → Shores & Parker; 2001-03-01 to current/open; source msha-controller-operator-history