# Relationship history for MSHA mine 3102175

Current hierarchy: **Carl Andrew Boggs et  al; David Christopher Boggs → Boggs Materials Inc → WILMINGTON MINE**

- 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:** Boggs Materials Inc → WILMINGTON MINE; 2001-06-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Carl Andrew Boggs et  al → WILMINGTON MINE; 2001-06-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Carl Andrew Boggs et  al → Boggs Materials Inc; 2001-06-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** David Christopher Boggs et al → Boggs Materials Inc; 2001-06-01 to current/open; source msha-controller-operator-history