# Relationship history for MSHA mine 1001482

Current hierarchy: **Tim  Kaschmitter; Bernie  Kaschmitter → Camas Gravel Company → Camas Gravel Crusher #1**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-18T09:31:49.615908+00:00

## Valid-time edges

- **controller_controls_mine:** Tim  Kaschmitter  et al → Camas Gravel Crusher #1; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Camas Gravel Company → Camas Gravel Crusher #1; 1980-06-01 to 2012-01-23; source msha-controller-operator-history
- **controller_controls_operator:** Tim  Kaschmitter  et al → Camas Gravel Company; 1980-06-01 to 2012-01-23; source msha-controller-operator-history
- **controller_controls_operator:** Bernie  Kaschmitter  et al → Camas Gravel Company; 1980-06-01 to 2012-01-23; source msha-controller-operator-history
- **controller_controls_mine:** Bernie  Kaschmitter  et al → Camas Gravel Crusher #1; 2008-12-10 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Camas Gravel Company → Camas Gravel Crusher #1; 2012-01-24 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Bernie  Kaschmitter  et al → Camas Gravel Company; 2012-01-24 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Tim  Kaschmitter  et al → Camas Gravel Company; 2012-01-24 to current/open; source msha-controller-operator-history