# Relationship history for MSHA mine 4003203

Current hierarchy: **Cheryl K  Barton; Jeffrey Shawn  Adkins → D & D Quarry LLC → Pita Mine**

- 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:** D & D Quarry LLC → Pita Mine; 2003-05-14 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Cheryl K  Barton  et al → Pita Mine; 2003-05-14 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Cheryl K  Barton  et al → D & D Quarry LLC; 2003-05-14 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jeffrey Shawn  Adkins et al → D & D Quarry LLC; 2003-05-14 to current/open; source msha-controller-operator-history