# Relationship history for MSHA mine 5001643

Current hierarchy: **Colas S A → QAP → #7-300 Crusher C Portable**

- 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:** Gordon P  Hayes Jr  et al → #7-300 Crusher C Portable; 1985-05-01 to 2000-08-31; source msha-controller-operator-history
- **controller_controls_mine:** Gordon  Crawley → #7-300 Crusher C Portable; 1995-03-01 to 2000-08-31; source msha-controller-operator-history
- **operator_operates_mine:** Quality Asphalt Paving Inc → #7-300 Crusher C Portable; 1998-09-01 to 2000-08-31; source msha-controller-operator-history
- **controller_controls_operator:** Gordon P  Hayes Jr  et al → Quality Asphalt Paving Inc; 1998-09-01 to 2000-08-31; source msha-controller-operator-history
- **operator_operates_mine:** QAP → #7-300 Crusher C Portable; 2000-09-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Colas S A → #7-300 Crusher C Portable; 2000-09-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Colas S A → QAP; 2000-09-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Gordon  Crawley → QAP; 2000-09-01 to 2000-08-31; source msha-controller-operator-history