# Relationship history for MSHA mine 4607474

Current hierarchy: **Nita  Lester → Skyward Enterprises Inc → No 1**

- 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:** Jeff  Chillag et al → No 1; 1985-08-26 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Joshua Industries Inc → No 1; 1988-03-01 to 1988-11-06; source msha-controller-operator-history
- **controller_controls_operator:** Jeff  Chillag et al → Joshua Industries Inc; 1988-03-01 to 1988-11-06; source msha-controller-operator-history
- **operator_operates_mine:** Armatron Fuel Inc → No 1; 1988-11-07 to 1989-05-31; source msha-controller-operator-history
- **controller_controls_mine:** Garland  Mullens → No 1; 1988-11-07 to 1989-05-31; source msha-controller-operator-history
- **controller_controls_operator:** Garland  Mullens → Armatron Fuel Inc; 1988-11-07 to 1989-05-31; source msha-controller-operator-history
- **operator_operates_mine:** Triple C Mining Inc → No 1; 1989-06-01 to 1992-03-26; source msha-controller-operator-history
- **controller_controls_mine:** Deborah  Clay → No 1; 1989-06-01 to 1992-03-26; source msha-controller-operator-history
- **controller_controls_operator:** Deborah  Clay → Triple C Mining Inc; 1989-06-01 to 1992-03-26; source msha-controller-operator-history
- **operator_operates_mine:** Triple O Mining Inc → No 1; 1992-03-27 to 1993-07-21; source msha-controller-operator-history
- **controller_controls_mine:** Meade Steve → No 1; 1992-03-27 to 1993-07-21; source msha-controller-operator-history
- **controller_controls_operator:** Meade Steve → Triple O Mining Inc; 1992-03-27 to 1993-07-21; source msha-controller-operator-history
- **controller_controls_mine:** Everett E  Ballard Jr → No 1; 1993-07-15 to 1994-01-30; source msha-controller-operator-history
- **operator_operates_mine:** Long Rifle Coal Inc → No 1; 1993-07-22 to 1993-11-01; source msha-controller-operator-history
- **controller_controls_operator:** Everett E  Ballard Jr → Long Rifle Coal Inc; 1993-07-22 to 1993-11-01; source msha-controller-operator-history
- **operator_operates_mine:** Gambler Coal Inc → No 1; 1993-11-02 to 1994-07-31; source msha-controller-operator-history
- **controller_controls_mine:** Barry  Elswick → No 1; 1993-11-02 to 1994-07-31; source msha-controller-operator-history
- **controller_controls_operator:** Barry  Elswick → Gambler Coal Inc; 1993-11-02 to 1994-07-31; source msha-controller-operator-history
- **operator_operates_mine:** Mine Office Inc → No 1; 1994-08-01 to 1995-09-24; source msha-controller-operator-history
- **controller_controls_mine:** James D  Duba → No 1; 1994-08-01 to 1995-09-24; source msha-controller-operator-history
- **controller_controls_operator:** James D  Duba → Mine Office Inc; 1994-08-01 to 1995-09-24; source msha-controller-operator-history
- **operator_operates_mine:** Magnum Coal Company Inc → No 1; 1995-09-25 to 1996-10-10; source msha-controller-operator-history
- **controller_controls_mine:** Madaline  Duba → No 1; 1995-09-25 to 1996-10-10; source msha-controller-operator-history
- **controller_controls_operator:** Madaline  Duba → Magnum Coal Company Inc; 1995-09-25 to 1996-10-10; source msha-controller-operator-history
- **operator_operates_mine:** Hickory Branch Inc → No 1; 1996-10-11 to 1998-02-08; source msha-controller-operator-history
- **controller_controls_mine:** Michael G  Wood → No 1; 1996-10-11 to 1998-02-08; source msha-controller-operator-history
- **controller_controls_operator:** Michael G  Wood → Hickory Branch Inc; 1996-10-11 to 1998-02-08; source msha-controller-operator-history
- **operator_operates_mine:** Skyward Enterprises Inc → No 1; 1998-02-09 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Nita  Lester → No 1; 1998-02-09 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Nita  Lester → Skyward Enterprises Inc; 1998-02-09 to current/open; source msha-controller-operator-history