# Relationship history for MSHA mine 4603474

Current hierarchy: **Endicott Shelby R → D & S Leasing Inc → No 8 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

- **controller_controls_mine:** Massey Energy Company → No 8 Mine; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Trace Fork Coal Company → No 8 Mine; 1973-01-01 to 1985-09-08; source msha-controller-operator-history
- **controller_controls_operator:** Massey Energy Company → Trace Fork Coal Company; 1973-01-01 to 1985-09-08; source msha-controller-operator-history
- **operator_operates_mine:** Justice Coal Excavation Inc → No 8 Mine; 1985-09-09 to 1986-01-01; source msha-controller-operator-history
- **controller_controls_mine:** Justice Jerry J → No 8 Mine; 1985-09-09 to 1986-09-28; source msha-controller-operator-history
- **controller_controls_operator:** Justice Jerry J → Justice Coal Excavation Inc; 1985-09-09 to 1986-01-01; source msha-controller-operator-history
- **controller_controls_mine:** Ted  Osborne  et al → No 8 Mine; 1985-09-09 to 1990-01-30; source msha-controller-operator-history
- **operator_operates_mine:** Soho Coal Company Inc → No 8 Mine; 1986-01-02 to 1987-09-24; source msha-controller-operator-history
- **controller_controls_operator:** Ted  Osborne  et al → Soho Coal Company Inc; 1986-01-02 to 1987-09-24; source msha-controller-operator-history
- **operator_operates_mine:** Big J Enterprises Inc → No 8 Mine; 1987-09-25 to 1988-03-10; source msha-controller-operator-history
- **controller_controls_mine:** Justice Jerry L → No 8 Mine; 1987-09-25 to 1988-03-10; source msha-controller-operator-history
- **controller_controls_operator:** Justice Jerry L → Big J Enterprises Inc; 1987-09-25 to 1988-03-10; source msha-controller-operator-history
- **operator_operates_mine:** Brittany Coal Company Inc → No 8 Mine; 1988-03-11 to 1989-03-21; source msha-controller-operator-history
- **controller_controls_mine:** Charles Robert B → No 8 Mine; 1988-03-11 to 1989-03-21; source msha-controller-operator-history
- **controller_controls_operator:** Charles Robert B → Brittany Coal Company Inc; 1988-03-11 to 1989-03-21; source msha-controller-operator-history
- **operator_operates_mine:** R & J Energy Inc → No 8 Mine; 1989-03-22 to 1991-01-01; source msha-controller-operator-history
- **controller_controls_mine:** Sylvester John Jr → No 8 Mine; 1989-03-22 to 1991-01-01; source msha-controller-operator-history
- **controller_controls_operator:** Sylvester John Jr → R & J Energy Inc; 1989-03-22 to 1991-01-01; source msha-controller-operator-history
- **operator_operates_mine:** Rock Minerals Inc → No 8 Mine; 1991-01-02 to 1991-05-14; source msha-controller-operator-history
- **controller_controls_mine:** Charles Robert B → No 8 Mine; 1991-01-02 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Charles Robert B → Rock Minerals Inc; 1991-01-02 to 1991-05-14; source msha-controller-operator-history
- **operator_operates_mine:** Dayton Resources Company → No 8 Mine; 1991-05-15 to 1991-08-12; source msha-controller-operator-history
- **controller_controls_mine:** Cooke Fletcher A → No 8 Mine; 1991-05-15 to 1991-08-12; source msha-controller-operator-history
- **controller_controls_operator:** Cooke Fletcher A → Dayton Resources Company; 1991-05-15 to 1991-08-12; source msha-controller-operator-history
- **operator_operates_mine:** Running Coal Energy Corp → No 8 Mine; 1991-08-13 to 1992-09-14; source msha-controller-operator-history
- **controller_controls_mine:** Wilson James E (Wv) → No 8 Mine; 1991-08-13 to 1992-09-14; source msha-controller-operator-history
- **controller_controls_operator:** Wilson James E (Wv) → Running Coal Energy Corp; 1991-08-13 to 1992-09-14; source msha-controller-operator-history
- **operator_operates_mine:** D & S Leasing Inc → No 8 Mine; 1992-09-15 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Endicott Shelby R → No 8 Mine; 1992-09-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Endicott Shelby R → D & S Leasing Inc; 1992-09-15 to current/open; source msha-controller-operator-history