# Relationship history for MSHA mine 1701083

Current hierarchy: **Brent Alan Willette → Impact Auto Inc dba B&L Construction → B&L Pit**

- 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:** Impact Auto Inc dba B&L Construction → B&L Pit; 2023-01-06 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Brent Alan Willette → B&L Pit; 2023-01-06 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Brent Alan Willette → Impact Auto Inc dba B&L Construction; 2023-01-06 to current/open; source msha-controller-operator-history