# Relationship history for MSHA mine 2003177

Current hierarchy: **Jeffery J  Stansley → Stansley Mineral Resources Inc → Plant 302 Stansley Mineral Resources**

- 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

- **controller_controls_mine:** Jeffery J  Stansley et al → Plant 302 Stansley Mineral Resources; 1991-10-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Sylvester Material Co Inc → Plant 302 Stansley Mineral Resources; 2000-09-01 to 2006-03-13; source msha-controller-operator-history
- **controller_controls_operator:** Jeffery J  Stansley et al → Sylvester Material Co Inc; 2000-09-01 to 2006-03-13; source msha-controller-operator-history
- **operator_operates_mine:** Stansley Mineral Resources, Inc. → Plant 302 Stansley Mineral Resources; 2006-03-14 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Jeffery J  Stansley et al → Plant 302 Stansley Mineral Resources; 2006-03-14 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jeffery J  Stansley et al → Stansley Mineral Resources, Inc.; 2006-03-14 to current/open; source msha-controller-operator-history