# Relationship history for MSHA mine 1002067

Current hierarchy: **Tim  Kaschmitter; Bernie  Kaschmitter → Camas Gravel → Salmon River Rock Products**

- 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:** Tim  Kaschmitter  et al → Salmon River Rock Products; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Camas Gravel Co → Salmon River Rock Products; 2005-03-07 to 2008-12-09; source msha-controller-operator-history
- **controller_controls_operator:** Tim  Kaschmitter  et al → Camas Gravel Co; 2005-03-07 to 2008-12-09; source msha-controller-operator-history
- **controller_controls_operator:** Bernie  Kaschmitter  et al → Camas Gravel Co; 2005-03-07 to 2008-12-09; source msha-controller-operator-history
- **operator_operates_mine:** Camas Gravel → Salmon River Rock Products; 2008-12-10 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Bernie  Kaschmitter  et al → Salmon River Rock Products; 2008-12-10 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Bernie  Kaschmitter  et al → Camas Gravel; 2008-12-10 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Tim  Kaschmitter  et al → Camas Gravel; 2008-12-10 to current/open; source msha-controller-operator-history