# Relationship history for MSHA mine 4202542

Current hierarchy: **Stephen G  Bunn → Broken Arrow Inc → Faust Perlite**

- 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:** Stephen G  Bunn → Faust Perlite; 1994-05-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Stephen G  Bunn → Faust Perlite; 2005-01-06 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Gary  Burningham et al → Faust Perlite; 2009-10-26 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** McFarland & Hullinger → Faust Perlite; 2010-03-03 to 2021-04-07; source msha-controller-operator-history
- **controller_controls_operator:** Stephen G  Bunn → McFarland & Hullinger; 2010-03-03 to 2021-04-07; source msha-controller-operator-history
- **operator_operates_mine:** Broken Arrow Inc → Faust Perlite; 2021-04-08 to 2023-03-20; source msha-controller-operator-history
- **controller_controls_operator:** Stephen G  Bunn → Broken Arrow Inc; 2021-04-08 to 2023-03-20; source msha-controller-operator-history
- **operator_operates_mine:** Burningham Enterprises Inc → Faust Perlite; 2023-03-21 to 2025-04-06; source msha-controller-operator-history
- **controller_controls_operator:** Gary  Burningham et al → Burningham Enterprises Inc; 2023-03-21 to 2025-04-06; source msha-controller-operator-history
- **controller_controls_operator:** Jeff  Burningham et al → Burningham Enterprises Inc; 2023-03-21 to 2025-04-06; source msha-controller-operator-history
- **operator_operates_mine:** Broken Arrow Inc → Faust Perlite; 2025-04-07 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Stephen G  Bunn → Broken Arrow Inc; 2025-04-07 to current/open; source msha-controller-operator-history