# Relationship history for MSHA mine 3003207

Current hierarchy: **Sean  O'Donovan → PETERSBURG SAND & GRAVEL → O'DONOVAN 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:** Petersburg Sand & Gravel → O'DONOVAN PIT; 1997-11-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Brian  O'Donovan → O'DONOVAN PIT; 1997-11-01 to 2016-09-25; source msha-controller-operator-history
- **controller_controls_operator:** Brian  O'Donovan → Petersburg Sand & Gravel; 1997-11-01 to 2016-09-25; source msha-controller-operator-history
- **controller_controls_mine:** Sean  O'Donovan → O'DONOVAN PIT; 2016-09-26 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Sean  O'Donovan → Petersburg Sand & Gravel; 2016-09-26 to current/open; source msha-controller-operator-history