# Relationship history for MSHA mine 3301253

Current hierarchy: **Johnson Cirby W & Lyne B → C & L Mining Company → Johnson 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

- **operator_operates_mine:** Rose Coal Company → Johnson Mine; 1950-01-01 to 1979-02-15; source msha-controller-operator-history
- **controller_controls_mine:** Rose James → Johnson Mine; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Rose James → Rose Coal Company; 1950-01-01 to 1979-02-15; source msha-controller-operator-history
- **operator_operates_mine:** C & L Mining Company → Johnson Mine; 1979-02-16 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Johnson Cirby W & Lyne B → Johnson Mine; 1979-02-16 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Johnson Cirby W & Lyne B → C & L Mining Company; 1979-02-16 to current/open; source msha-controller-operator-history