# Relationship history for MSHA mine 4103383

Current hierarchy: **Waldrip Beverly → Novo West Mining Corp → Hutchins Plant**

- 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:** Dowdy Ferry Sand & Gravel Company Inc → Hutchins Plant; 1986-02-01 to 1986-10-27; source msha-controller-operator-history
- **controller_controls_mine:** Trevino Raul → Hutchins Plant; 1986-02-01 to 1986-10-27; source msha-controller-operator-history
- **controller_controls_operator:** Trevino Raul → Dowdy Ferry Sand & Gravel Company Inc; 1986-02-01 to 1986-10-27; source msha-controller-operator-history
- **controller_controls_mine:** Waldrip Beverly → Hutchins Plant; 1986-10-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Novo West Mining Corp → Hutchins Plant; 1986-10-28 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Waldrip Beverly → Novo West Mining Corp; 1986-10-28 to current/open; source msha-controller-operator-history