# Relationship history for MSHA mine 4105238

Current hierarchy: **Jobeco Materials LLC → Jobe Materials, L.P. → Van Horn 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:** Irene  Epperson et al → Van Horn Quarry; 2005-04-26 to 2024-07-14; source msha-controller-operator-history
- **operator_operates_mine:** Jobe Materials, L.P. → Van Horn Quarry; 2017-03-09 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Irene  Epperson et al → Jobe Materials, L.P.; 2017-03-09 to 2024-07-14; source msha-controller-operator-history
- **controller_controls_operator:** Stanley P  Jobe et al → Jobe Materials, L.P.; 2017-03-09 to 2024-07-14; source msha-controller-operator-history
- **controller_controls_mine:** Jobeco Materials LLC et al → Van Horn Quarry; 2024-07-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jobeco Materials LLC et al → Jobe Materials, L.P.; 2024-07-15 to current/open; source msha-controller-operator-history