# Relationship history for MSHA mine 0600689

Current hierarchy: **Lee K  Baldwin; Jared R  Denis → FAY & WRIGHT EXCAVATING INC → PORTABLE CRUSHER #1**

- 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:** Fay & Wright Excavating Inc → PORTABLE CRUSHER #1; 2000-02-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** A Edward  Wright  et al → PORTABLE CRUSHER #1; 2000-02-01 to 2017-04-24; source msha-controller-operator-history
- **controller_controls_operator:** A Edward  Wright  et al → Fay & Wright Excavating Inc; 2000-02-01 to 2017-04-24; source msha-controller-operator-history
- **controller_controls_operator:** Peter A  Fay  et al → Fay & Wright Excavating Inc; 2000-02-01 to 2017-04-24; source msha-controller-operator-history
- **controller_controls_mine:** Jared R  Denis et al → PORTABLE CRUSHER #1; 2017-04-25 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jared R  Denis et al → Fay & Wright Excavating Inc; 2017-04-25 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Lee K  Baldwin et al → Fay & Wright Excavating Inc; 2017-04-25 to current/open; source msha-controller-operator-history