# Relationship history for MSHA mine 4402002

Current hierarchy: **Hurshel  Bowers; James J  Collins → Bossco Inc → Bossco No 3 Strip Or No 3 Strip**

- 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

- **operator_operates_mine:** Bossco Inc → Bossco No 3 Strip Or No 3 Strip; 1971-02-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Hurshel  Bowers et al → Bossco No 3 Strip Or No 3 Strip; 1971-02-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Hurshel  Bowers et al → Bossco Inc; 1971-02-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** James J  Collins  et al → Bossco Inc; 1971-02-01 to current/open; source msha-controller-operator-history