# Relationship history for MSHA mine 2700553

Current hierarchy: **Charles P  Morley; Peter  Scott → Loudon Sand and Gravel → Loudon Sand and Gravel**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-18T09:31:49.615908+00:00

## Valid-time edges

- **operator_operates_mine:** Loudon Sand and Gravel → Loudon Sand and Gravel; 2024-04-03 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Charles P  Morley → Loudon Sand and Gravel; 2024-04-03 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Charles P  Morley → Loudon Sand and Gravel; 2024-04-03 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Peter  Scott → Loudon Sand and Gravel; 2024-04-03 to current/open; source msha-controller-operator-history