# Relationship history for MSHA mine 4608928

Current hierarchy: **Johnny J  Bishoff; James R  Bishoff → Bishoff Brothers Inc. → Fairmont Energy Mine #2**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **controller_controls_mine:** William E  Konya et al → Fairmont Energy Mine #2; 1998-09-02 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Johnny J  Bishoff et al → Fairmont Energy Mine #2; 2001-01-04 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Konya Enterprises, Inc. → Fairmont Energy Mine #2; 2001-11-12 to 2002-01-19; source msha-controller-operator-history
- **controller_controls_operator:** William E  Konya et al → Konya Enterprises, Inc.; 2001-11-12 to 2002-01-19; source msha-controller-operator-history
- **controller_controls_operator:** Steve A  Konya et al → Konya Enterprises, Inc.; 2001-11-12 to 2002-01-19; source msha-controller-operator-history
- **operator_operates_mine:** TWOINONE COAL COMPANY, INC. → Fairmont Energy Mine #2; 2002-01-20 to 2002-03-17; source msha-controller-operator-history
- **controller_controls_mine:** Gary  Morgan → Fairmont Energy Mine #2; 2002-01-20 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Gary  Morgan → TWOINONE COAL COMPANY, INC.; 2002-01-20 to 2002-03-17; source msha-controller-operator-history
- **operator_operates_mine:** Bishoff Brothers Inc. → Fairmont Energy Mine #2; 2002-03-18 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Johnny J  Bishoff et al → Bishoff Brothers Inc.; 2002-03-18 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** James R  Bishoff et al → Bishoff Brothers Inc.; 2002-03-18 to current/open; source msha-controller-operator-history