# Relationship history for MSHA mine 4407062

Current hierarchy: **Bonita  Omps etal; Brian  Omps etal → Shenandoah Sand, Inc. → Gore Mine**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **operator_operates_mine:** Shenandoah Sand, Inc. → Gore Mine; 2002-12-04 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Vicki F  Newlin → Gore Mine; 2002-12-04 to 2021-09-06; source msha-controller-operator-history
- **controller_controls_operator:** Vicki F  Newlin → Shenandoah Sand, Inc.; 2002-12-04 to 2021-09-06; source msha-controller-operator-history
- **controller_controls_mine:** Bonita  Omps etal → Gore Mine; 2021-09-07 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Bonita  Omps etal → Shenandoah Sand, Inc.; 2021-09-07 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Brian  Omps etal → Shenandoah Sand, Inc.; 2021-09-07 to current/open; source msha-controller-operator-history