# Relationship history for MSHA mine 3601850

Current hierarchy: **Adams Esmeralda A → Raymond Adams Mining → South Dip Skidmore Slope 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: 2026-10-18T09:31:49.615908+00:00

## Valid-time edges

- **operator_operates_mine:** Raymond Adams Mining → South Dip Skidmore Slope Mine; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Adams Esmeralda A → South Dip Skidmore Slope Mine; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Adams Esmeralda A → Raymond Adams Mining; 1950-01-01 to current/open; source msha-controller-operator-history