# Relationship history for MSHA mine 3610500

Current hierarchy: **Jeffery  Mikloiche; James  Grecco → J & J Stone Products Inc. → Range 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:** J & J Stone Products Inc. → Range Quarry; 2026-06-15 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Jeffery  Mikloiche et al → Range Quarry; 2026-06-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jeffery  Mikloiche et al → J & J Stone Products Inc.; 2026-06-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** James  Grecco et al → J & J Stone Products Inc.; 2026-06-15 to current/open; source msha-controller-operator-history