# Relationship history for MSHA mine 3800631

Current hierarchy: **Butler  Ware → Butler Ware Trucking Inc → 17-A DIRT 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:** 17-A Pit Inc → 17-A DIRT PIT; 1988-12-01 to 2000-06-14; source msha-controller-operator-history
- **controller_controls_mine:** Thomas B  Daniels → 17-A DIRT PIT; 1988-12-01 to 2000-06-14; source msha-controller-operator-history
- **controller_controls_operator:** Thomas B  Daniels → 17-A Pit Inc; 1988-12-01 to 2000-06-14; source msha-controller-operator-history
- **operator_operates_mine:** Butler Ware Trucking Inc → 17-A DIRT PIT; 2000-06-15 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Butler  Ware → 17-A DIRT PIT; 2000-06-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Butler  Ware → Butler Ware Trucking Inc; 2000-06-15 to current/open; source msha-controller-operator-history