# Relationship history for MSHA mine 1509704

Current hierarchy: **Lemar Reece → Harlan-Bell Coal Inc → Yancey No 17 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: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **controller_controls_mine:** Benjamin R.  Bennett → Yancey No 17 Mine; 1974-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Goldfield Corp → Yancey No 17 Mine; 1975-03-13 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** M & M Coal Company → Yancey No 17 Mine; 1977-03-01 to 1979-12-12; source msha-controller-operator-history
- **controller_controls_operator:** Benjamin R.  Bennett → M & M Coal Company; 1977-03-01 to 1979-12-12; source msha-controller-operator-history
- **controller_controls_mine:** Lemar Reece → Yancey No 17 Mine; 1979-07-03 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Harlan Fuel Company → Yancey No 17 Mine; 1979-12-13 to 1982-02-21; source msha-controller-operator-history
- **controller_controls_operator:** Goldfield Corp → Harlan Fuel Company; 1979-12-13 to 1982-02-21; source msha-controller-operator-history
- **operator_operates_mine:** Harlan Fuel Company → Yancey No 17 Mine; 1982-02-22 to 1982-06-28; source msha-controller-operator-history
- **controller_controls_mine:** Bow Valley Industries Ltd → Yancey No 17 Mine; 1982-02-22 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Bow Valley Industries Ltd → Harlan Fuel Company; 1982-02-22 to 1982-06-28; source msha-controller-operator-history
- **operator_operates_mine:** Harlan-Bell Coal Inc → Yancey No 17 Mine; 1982-06-29 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Lemar Reece → Harlan-Bell Coal Inc; 1982-06-29 to current/open; source msha-controller-operator-history