# Relationship history for MSHA mine 0505012

Current hierarchy: **Shallenberger Ventures LLC → Shallenberger Energy LLC. → Urie Gravel Pit (Permit M-2009-038)**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-18T09:31:49.615908+00:00

## Valid-time edges

- **operator_operates_mine:** Urle Rock Company → Urie Gravel Pit (Permit M-2009-038); 2013-01-14 to 2025-04-01; source msha-controller-operator-history
- **controller_controls_mine:** Elaine C.  Urle → Urie Gravel Pit (Permit M-2009-038); 2013-01-14 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Elaine C.  Urle → Urle Rock Company; 2013-01-14 to 2025-04-01; source msha-controller-operator-history
- **operator_operates_mine:** Shallenberger Energy LLC. → Urie Gravel Pit (Permit M-2009-038); 2025-04-02 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Shallenberger Ventures LLC → Urie Gravel Pit (Permit M-2009-038); 2025-04-02 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Shallenberger Ventures LLC → Shallenberger Energy LLC.; 2025-04-02 to current/open; source msha-controller-operator-history