# Relationship history for MSHA mine 2200730

Current hierarchy: **Cary  Askew; Donnie  Askew → C & D Sand & Gravel Inc → Pit 1**

- 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:** C & D Sand & Gravel Inc → Pit 1; 2000-05-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Donnie  Askew  et al → Pit 1; 2000-05-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Donnie  Askew  et al → C & D Sand & Gravel Inc; 2000-05-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Cary  Askew  et al → C & D Sand & Gravel Inc; 2000-05-01 to current/open; source msha-controller-operator-history