# Relationship history for MSHA mine 3610194

Current hierarchy: **Patric  Kipar → S & K Stone Inc → Jersey 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

- **controller_controls_mine:** Robert K  Volk → Jersey Hill Quarry; 2004-04-22 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Arrowhead Quarries → Jersey Hill Quarry; 2016-09-06 to 2026-03-31; source msha-controller-operator-history
- **controller_controls_operator:** Robert K  Volk → Arrowhead Quarries; 2016-09-06 to 2026-03-31; source msha-controller-operator-history
- **operator_operates_mine:** S & K Stone Inc → Jersey Hill Quarry; 2026-04-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Patric  Kipar → Jersey Hill Quarry; 2026-04-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Patric  Kipar → S & K Stone Inc; 2026-04-01 to current/open; source msha-controller-operator-history