# Relationship history for MSHA mine 3003151

Current hierarchy: **Daryl  Marshall; Michael G  Marshall → Otis Marshall Farms Inc → Otis Marshall Farms Incorporated**

- 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:** Otis Marshall Farms Inc → Otis Marshall Farms Incorporated; 1996-04-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Michael G  Marshall et al → Otis Marshall Farms Incorporated; 1996-04-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Michael G  Marshall et al → Otis Marshall Farms Inc; 1996-04-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Daryl  Marshall et al → Otis Marshall Farms Inc; 1996-04-01 to current/open; source msha-controller-operator-history