# Relationship history for MSHA mine 4603408

Current hierarchy: **Massey Energy Company → Crystal Fuels Company → No 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:** Peerless Alma Coals Inc → No 1 Mine; 1950-01-01 to 1984-08-30; source msha-controller-operator-history
- **controller_controls_mine:** International Industries Inc → No 1 Mine; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** International Industries Inc → Peerless Alma Coals Inc; 1950-01-01 to 1984-08-30; source msha-controller-operator-history
- **operator_operates_mine:** Wan Hope Coal Company Inc → No 1 Mine; 1984-08-31 to 1985-10-08; source msha-controller-operator-history
- **controller_controls_mine:** William  Smith et al → No 1 Mine; 1984-08-31 to 1985-10-08; source msha-controller-operator-history
- **controller_controls_operator:** William  Smith et al → Wan Hope Coal Company Inc; 1984-08-31 to 1985-10-08; source msha-controller-operator-history
- **operator_operates_mine:** Donex Mining Inc → No 1 Mine; 1985-10-09 to 1987-08-21; source msha-controller-operator-history
- **controller_controls_mine:** Rex  Fought → No 1 Mine; 1985-10-09 to 1987-08-21; source msha-controller-operator-history
- **controller_controls_operator:** Rex  Fought → Donex Mining Inc; 1985-10-09 to 1987-08-21; source msha-controller-operator-history
- **operator_operates_mine:** Donex Mining Inc → No 1 Mine; 1987-08-22 to 1988-04-13; source msha-controller-operator-history
- **controller_controls_mine:** Dorse  Hatfield → No 1 Mine; 1987-08-22 to 1988-04-13; source msha-controller-operator-history
- **controller_controls_operator:** Dorse  Hatfield → Donex Mining Inc; 1987-08-22 to 1988-04-13; source msha-controller-operator-history
- **operator_operates_mine:** S D R & N Coal Inc → No 1 Mine; 1988-04-14 to 1989-02-12; source msha-controller-operator-history
- **controller_controls_mine:** Debbie  Endicott → No 1 Mine; 1988-04-14 to 1989-02-12; source msha-controller-operator-history
- **controller_controls_operator:** Debbie  Endicott → S D R & N Coal Inc; 1988-04-14 to 1989-02-12; source msha-controller-operator-history
- **controller_controls_mine:** Joby  Fields → No 1 Mine; 1988-06-03 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Preparation Maintenance Inc → No 1 Mine; 1989-02-13 to 1989-06-04; source msha-controller-operator-history
- **controller_controls_operator:** Joby  Fields → Preparation Maintenance Inc; 1989-02-13 to 1989-06-04; source msha-controller-operator-history
- **operator_operates_mine:** Nugget Resources Company Inc → No 1 Mine; 1989-06-05 to 1991-07-22; source msha-controller-operator-history
- **controller_controls_mine:** Les  Mayhorn et al → No 1 Mine; 1989-06-05 to 1991-07-22; source msha-controller-operator-history
- **controller_controls_operator:** Les  Mayhorn et al → Nugget Resources Company Inc; 1989-06-05 to 1991-07-22; source msha-controller-operator-history
- **operator_operates_mine:** Preparation Maintenance Inc → No 1 Mine; 1991-07-23 to 1991-09-18; source msha-controller-operator-history
- **controller_controls_operator:** Joby  Fields → Preparation Maintenance Inc; 1991-07-23 to 1991-09-18; source msha-controller-operator-history
- **operator_operates_mine:** Nicole Coal Company Inc → No 1 Mine; 1991-09-19 to 1994-01-17; source msha-controller-operator-history
- **controller_controls_mine:** Garrett N  Blackburn → No 1 Mine; 1991-09-19 to 1994-01-17; source msha-controller-operator-history
- **controller_controls_operator:** Garrett N  Blackburn → Nicole Coal Company Inc; 1991-09-19 to 1994-01-17; source msha-controller-operator-history
- **operator_operates_mine:** Essential Fuels Inc → No 1 Mine; 1994-01-18 to 1994-03-31; source msha-controller-operator-history
- **controller_controls_mine:** Timothy L  McCoy → No 1 Mine; 1994-01-18 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Timothy L  McCoy → Essential Fuels Inc; 1994-01-18 to 1994-03-31; source msha-controller-operator-history
- **operator_operates_mine:** Crystal Fuels Company → No 1 Mine; 1994-04-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Massey Energy Company → No 1 Mine; 1994-04-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Massey Energy Company → Crystal Fuels Company; 1994-04-01 to current/open; source msha-controller-operator-history