# Relationship history for MSHA mine 4608091

Current hierarchy: **Lexington Coal Company LLC → LCC West Virginia, LLC → Sandlick Surface Mine**

- 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

- **controller_controls_mine:** Cyprus Amax Minerals Company → Sandlick Surface Mine; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Cannelton Industries Inc → Sandlick Surface Mine; 1991-09-01 to 2004-09-30; source msha-controller-operator-history
- **controller_controls_operator:** Cyprus Amax Minerals Company → Cannelton Industries Inc; 1991-09-01 to 2004-09-30; source msha-controller-operator-history
- **operator_operates_mine:** LCC West Virginia, LLC → Sandlick Surface Mine; 2004-10-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Lexington Coal Company LLC → Sandlick Surface Mine; 2004-10-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Lexington Coal Company LLC → LCC West Virginia, LLC; 2004-10-01 to current/open; source msha-controller-operator-history