# Relationship history for MSHA mine 3002522

Current hierarchy: **Jane P  Weston → Forest Glen Construction Corp → WALLKILL 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: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **operator_operates_mine:** Crystal Run Sand & Gravel Inc → WALLKILL GRAVEL BANK; 1980-01-01 to 1991-01-02; source msha-controller-operator-history
- **controller_controls_mine:** Sherman Steven → WALLKILL GRAVEL BANK; 1980-01-01 to 1994-07-19; source msha-controller-operator-history
- **controller_controls_operator:** Sherman Steven → Crystal Run Sand & Gravel Inc; 1980-01-01 to 1991-01-02; source msha-controller-operator-history
- **operator_operates_mine:** Forest Glen Construction Corp → WALLKILL GRAVEL BANK; 1991-01-03 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Jane P  Weston → WALLKILL GRAVEL BANK; 1991-01-03 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jane P  Weston → Forest Glen Construction Corp; 1991-01-03 to current/open; source msha-controller-operator-history