# Relationship history for MSHA mine 4002508

Current hierarchy: **Eddie  Shaw → Adamsville Sand & Gravel Inc → Adamsville Sand & 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

- **controller_controls_mine:** Eddie  Shaw → Adamsville Sand & Gravel; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Clyde Owen Sand & Gravel Inc → Adamsville Sand & Gravel; 1979-01-01 to 1983-01-05; source msha-controller-operator-history
- **controller_controls_mine:** Clyde  Owen → Adamsville Sand & Gravel; 1979-01-01 to 1983-01-05; source msha-controller-operator-history
- **controller_controls_operator:** Clyde  Owen → Clyde Owen Sand & Gravel Inc; 1979-01-01 to 1983-01-05; source msha-controller-operator-history
- **operator_operates_mine:** Shiloh Aggregate Inc → Adamsville Sand & Gravel; 1983-01-06 to 1985-04-23; source msha-controller-operator-history
- **controller_controls_mine:** Lockwood Ernest B & Charlie Riggans → Adamsville Sand & Gravel; 1983-01-06 to 1985-04-23; source msha-controller-operator-history
- **controller_controls_operator:** Lockwood Ernest B & Charlie Riggans → Shiloh Aggregate Inc; 1983-01-06 to 1985-04-23; source msha-controller-operator-history
- **operator_operates_mine:** Adamsville Sand & Gravel Inc → Adamsville Sand & Gravel; 1985-04-24 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Eddie  Shaw → Adamsville Sand & Gravel Inc; 1985-04-24 to current/open; source msha-controller-operator-history