# Relationship history for MSHA mine 5002061

Current hierarchy: **Amanda M  Espinola; Nickolas D  Espinola → Breaking Ground Resources → Three Rivers Project**

- 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:** Breaking Ground Resources → Three Rivers Project; 2017-05-04 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Nickolas D  Espinola et al → Three Rivers Project; 2017-05-04 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Nickolas D  Espinola et al → Breaking Ground Resources; 2017-05-04 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Amanda M  Espinola et al → Breaking Ground Resources; 2017-05-04 to current/open; source msha-controller-operator-history