# Relationship history for MSHA mine 4202323

Current hierarchy: **Dennis C  Jorgensen → Heritage Quarries LLC → Green Peak**

- 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:** Sierra Stone Inc → Green Peak; 2001-07-01 to 2003-05-28; source msha-controller-operator-history
- **controller_controls_mine:** Ernie Ray  Hale → Green Peak; 2001-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Ernie Ray  Hale → Sierra Stone Inc; 2001-07-01 to 2003-05-28; source msha-controller-operator-history
- **operator_operates_mine:** Heritage Quarries LLC → Green Peak; 2003-05-29 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Dennis C  Jorgensen → Green Peak; 2003-05-29 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Dennis C  Jorgensen → Heritage Quarries LLC; 2003-05-29 to current/open; source msha-controller-operator-history