# Relationship history for MSHA mine 4801548

Current hierarchy: **Gordon E  Lindley → Lindley Construction Inc → LINDLEY GRAVEL PIT**

- 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

- **operator_operates_mine:** Lindley Construction Inc → LINDLEY GRAVEL PIT; 1998-06-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Gordon E  Lindley → LINDLEY GRAVEL PIT; 1998-06-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Gordon E  Lindley → Lindley Construction Inc; 1998-06-01 to current/open; source msha-controller-operator-history