# Relationship history for MSHA mine 3003175

Current hierarchy: **Jane P  Weston → Forest Glen Construction Corp → STONY FORD GRAVEL BANK**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-18T09:31:49.615908+00:00

## Valid-time edges

- **controller_controls_mine:** Jane P  Weston → STONY FORD GRAVEL BANK; 1991-01-03 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Forest Glen Construction Corp → STONY FORD GRAVEL BANK; 1996-09-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jane P  Weston → Forest Glen Construction Corp; 1996-09-01 to current/open; source msha-controller-operator-history