# Relationship history for MSHA mine 4605506

Current hierarchy: **Farley James R → F & D Electrical Mining Equipment Company → Take-In #1 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:** Take In Coals Inc → Take-In #1 Mine; 1977-04-01 to 1981-03-09; source msha-controller-operator-history
- **controller_controls_mine:** Reed Kathy → Take-In #1 Mine; 1977-04-01 to 1981-03-09; source msha-controller-operator-history
- **controller_controls_operator:** Reed Kathy → Take In Coals Inc; 1977-04-01 to 1981-03-09; source msha-controller-operator-history
- **operator_operates_mine:** F & D Electrical Mining Equipment Company → Take-In #1 Mine; 1981-03-10 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Farley James R → Take-In #1 Mine; 1981-03-10 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Farley James R → F & D Electrical Mining Equipment Company; 1981-03-10 to current/open; source msha-controller-operator-history