# Relationship history for MSHA mine 0203366

Current hierarchy: **Jason  Briggs; Dan  Smith; Matthew  McKaurie; Fred  Coulson → Kingman Briggs, LLC → Kingman Briggs**

- 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:** Kingman Briggs, LLC → Kingman Briggs; 2016-08-09 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Jason  Briggs et al → Kingman Briggs; 2016-08-09 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jason  Briggs et al → Kingman Briggs, LLC; 2016-08-09 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Fred  Coulson et al → Kingman Briggs, LLC; 2016-08-09 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Matthew  McKaurie et al → Kingman Briggs, LLC; 2016-08-09 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Dan  Smith et al → Kingman Briggs, LLC; 2016-08-09 to current/open; source msha-controller-operator-history