# Relationship history for MSHA mine 3609330

Current hierarchy: **Richard H  Jenner → Richard Jenner Stone → Jenner Quarry**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **controller_controls_mine:** Richard H  Jenner → Jenner Quarry; 2001-03-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Richard Jenner Stone → Jenner Quarry; 2005-05-12 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Richard H  Jenner → Richard Jenner Stone; 2005-05-12 to current/open; source msha-controller-operator-history