# Relationship history for MSHA mine 4104772

Current hierarchy: **John  Miller; Wade  Miller → BC Materials, LLC → Mitchell 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:** BC Materials, LLC → Mitchell Pit; 2009-01-16 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** John W  Miller → Mitchell Pit; 2009-01-16 to 2024-10-21; source msha-controller-operator-history
- **controller_controls_operator:** John W  Miller → BC Materials, LLC; 2009-01-16 to 2024-10-21; source msha-controller-operator-history
- **controller_controls_mine:** John  Miller et al → Mitchell Pit; 2024-10-22 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** John  Miller et al → BC Materials, LLC; 2024-10-22 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Wade  Miller et al → BC Materials, LLC; 2024-10-22 to current/open; source msha-controller-operator-history