# Relationship history for MSHA mine 3001212

Current hierarchy: **Aaron D  Scott → McConnellsville Sands & Materials Inc → MCConnellsville 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: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **operator_operates_mine:** Whibco Inc → MCConnellsville Pit; 1950-01-01 to 2002-03-16; source msha-controller-operator-history
- **controller_controls_mine:** WHIBCO, Inc. → MCConnellsville Pit; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** WHIBCO, Inc. → Whibco Inc; 1950-01-01 to 2002-03-16; source msha-controller-operator-history
- **operator_operates_mine:** McConnellsville Sands & Materials Inc → MCConnellsville Pit; 2002-03-17 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Aaron D  Scott → MCConnellsville Pit; 2002-03-17 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Aaron D  Scott → McConnellsville Sands & Materials Inc; 2002-03-17 to current/open; source msha-controller-operator-history