# Relationship history for MSHA mine 1510603

Current hierarchy: **Anderson & Anderson Inc → Mecklenburg Coal & Mining Company → No 5 Strip**

- 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:** Anderson & Anderson Inc → No 5 Strip; 1977-03-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Mecklenburg Coal & Mining Company → No 5 Strip; 1977-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Anderson & Anderson Inc → Mecklenburg Coal & Mining Company; 1977-07-01 to current/open; source msha-controller-operator-history