# Relationship history for MSHA mine 4002353

Current hierarchy: **Ronnie H  Carroll → Straight Creek Mining 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:** Robert E  Haden et al → No 1; 1950-01-01 to 2007-07-26; source msha-controller-operator-history
- **controller_controls_mine:** K Q  Chedester → No 1; 1975-05-16 to 2000-05-14; source msha-controller-operator-history
- **operator_operates_mine:** Colquest Energy Inc → No 1; 1977-10-01 to 1992-11-18; source msha-controller-operator-history
- **controller_controls_operator:** K Q  Chedester → Colquest Energy Inc; 1977-10-01 to 1992-11-18; source msha-controller-operator-history
- **operator_operates_mine:** Kopper-Glo Fuel Inc → No 1; 1992-11-19 to 1995-03-22; source msha-controller-operator-history
- **controller_controls_operator:** Robert E  Haden et al → Kopper-Glo Fuel Inc; 1992-11-19 to 1995-03-22; source msha-controller-operator-history
- **operator_operates_mine:** Straight Creek Mining Inc → No 1; 1995-03-23 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Ronnie H  Carroll → No 1; 1995-03-23 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Ronnie H  Carroll → Straight Creek Mining Inc; 1995-03-23 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Keith D  Dyke → No 1; 2007-07-27 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Keith D  Dyke → Kopper-Glo Fuel Inc; 2007-07-27 to 1995-03-22; source msha-controller-operator-history