# Relationship history for MSHA mine 3901660

Current hierarchy: **Gerrick  McComsey → Sharpe Enterprises, Inc. → Lower Brule Sioux Tribe**

- 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:** Sharpe Enterprises, Inc. → Lower Brule Sioux Tribe; 2022-02-18 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Gerrick  McComsey → Lower Brule Sioux Tribe; 2022-02-18 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Gerrick  McComsey → Sharpe Enterprises, Inc.; 2022-02-18 to current/open; source msha-controller-operator-history