# Relationship history for MSHA mine 2700385

Current hierarchy: **Donald A  Crate → Donald A Crate & Evelyn J Crate → Bog Rd Pit**

- 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:** Donald A Crate & Evelyn J Crate → Bog Rd Pit; 2003-07-24 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Donald A  Crate → Bog Rd Pit; 2003-07-24 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Donald A  Crate → Donald A Crate & Evelyn J Crate; 2003-07-24 to current/open; source msha-controller-operator-history