# Relationship history for MSHA mine 1601107

Current hierarchy: **Lutes Billy G Ii → Tri Star Industries Inc → Colfax Plant**

- 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:** B G Lutes & Son Company Inc → Colfax Plant; 1986-09-01 to 1988-07-29; source msha-controller-operator-history
- **controller_controls_mine:** Lutes Billy G → Colfax Plant; 1986-09-01 to 1988-07-29; source msha-controller-operator-history
- **controller_controls_operator:** Lutes Billy G → B G Lutes & Son Company Inc; 1986-09-01 to 1988-07-29; source msha-controller-operator-history
- **operator_operates_mine:** Tri Star Industries Inc → Colfax Plant; 1988-07-30 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Lutes Billy G Ii → Colfax Plant; 1988-07-30 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Lutes Billy G Ii → Tri Star Industries Inc; 1988-07-30 to current/open; source msha-controller-operator-history