# Relationship history for MSHA mine 3608117

Current hierarchy: **Rob  Mears; Curt  Mears → Godin Bros Inc → Acosta Mine III**

- 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:** David E  Godin → Acosta Mine III; 1986-07-14 to 2008-04-30; source msha-controller-operator-history
- **operator_operates_mine:** Godin Bros Inc → Acosta Mine III; 1989-10-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** David E  Godin → Godin Bros Inc; 1989-10-01 to 2008-04-30; source msha-controller-operator-history
- **controller_controls_mine:** Curt  Mears et al → Acosta Mine III; 2008-05-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Curt  Mears et al → Godin Bros Inc; 2008-05-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Rob  Mears et al → Godin Bros Inc; 2008-05-01 to current/open; source msha-controller-operator-history