# Relationship history for MSHA mine 1102636

Current hierarchy: **Darrell  Dorsey → WFI → WFI**

- 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:** Kenellis Energies Inc → WFI; 1978-04-01 to 1991-11-30; source msha-controller-operator-history
- **controller_controls_mine:** Buddie R  Morris → WFI; 1978-04-01 to 1991-11-30; source msha-controller-operator-history
- **controller_controls_operator:** Buddie R  Morris → Kenellis Energies Inc; 1978-04-01 to 1991-11-30; source msha-controller-operator-history
- **operator_operates_mine:** Brushy Creek Coal Company → WFI; 1991-12-01 to 2001-09-05; source msha-controller-operator-history
- **controller_controls_mine:** Western Fuels Association Inc → WFI; 1991-12-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Western Fuels Association Inc → Brushy Creek Coal Company; 1991-12-01 to 2001-09-05; source msha-controller-operator-history
- **operator_operates_mine:** Nubay Mining LLC → WFI; 2001-09-06 to 2006-11-14; source msha-controller-operator-history
- **controller_controls_mine:** Charles R  Collins → WFI; 2001-09-06 to 2006-02-08; source msha-controller-operator-history
- **controller_controls_operator:** Charles R  Collins → Nubay Mining LLC; 2001-09-06 to 2006-02-08; source msha-controller-operator-history
- **controller_controls_mine:** Edward J  Hatcher → WFI; 2006-02-09 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Edward J  Hatcher → Nubay Mining LLC; 2006-02-09 to 2006-11-14; source msha-controller-operator-history
- **operator_operates_mine:** Workforce Development Institute → WFI; 2006-11-15 to 2007-11-30; source msha-controller-operator-history
- **controller_controls_mine:** Phillip  McGilton → WFI; 2006-11-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Phillip  McGilton → Workforce Development Institute; 2006-11-15 to 2007-11-30; source msha-controller-operator-history
- **operator_operates_mine:** WFI → WFI; 2007-12-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Darrell  Dorsey → WFI; 2007-12-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Darrell  Dorsey → WFI; 2007-12-01 to current/open; source msha-controller-operator-history