# Relationship history for MSHA mine 3503565

Current hierarchy: **Cathie L  Groves; Michael F  Groves → Groves Holdings LLC → GB Resources LLC**

- 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:** Ochoco Ready Mix Inc → GB Resources LLC; 2002-07-15 to 2017-05-14; source msha-controller-operator-history
- **controller_controls_mine:** Milton F Shrum → GB Resources LLC; 2002-07-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Milton F Shrum → Ochoco Ready Mix Inc; 2002-07-15 to 2017-05-14; source msha-controller-operator-history
- **operator_operates_mine:** Groves Holdings LLC → GB Resources LLC; 2017-05-15 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Cathie L  Groves et al → GB Resources LLC; 2017-05-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Cathie L  Groves et al → Groves Holdings LLC; 2017-05-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Michael F  Groves et al → Groves Holdings LLC; 2017-05-15 to current/open; source msha-controller-operator-history