# Relationship history for MSHA mine 3004002

Current hierarchy: **Jonathan R Mahany → Jonathan Mahany Farms → A. Spencer Gravel 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: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **operator_operates_mine:** Jonathan Mahany Farms → A. Spencer Gravel Pit; 2017-09-13 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Jonathan R Mahany → A. Spencer Gravel Pit; 2017-09-13 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jonathan R Mahany → Jonathan Mahany Farms; 2017-09-13 to current/open; source msha-controller-operator-history