# Relationship history for MSHA mine 3609730

Current hierarchy: **Robert C.  Paul; Timothy R.  Paul → Pauls Flagstone Company → Harrys Hill 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: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **operator_operates_mine:** Paul's Flagstone Company → Harrys Hill Quarry; 2009-03-31 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Robert C.  Paul et al → Harrys Hill Quarry; 2009-03-31 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Robert C.  Paul et al → Paul's Flagstone Company; 2009-03-31 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Timothy R.  Paul et al → Paul's Flagstone Company; 2009-03-31 to current/open; source msha-controller-operator-history