# Relationship history for MSHA mine 1002199

Current hierarchy: **Bannock County-ID → Bannock County Public Works → Crusher**

- 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:** Bannock County-ID → Crusher; 1978-03-09 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Bannock County Public Works → Crusher; 2010-01-13 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Bannock County-ID → Bannock County Public Works; 2010-01-13 to current/open; source msha-controller-operator-history