# Relationship history for MSHA mine 2103789

Current hierarchy: **Phillip  Schoep; Eugene  Schoep → Schoep Contracting LLC → Crusher #1**

- 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:** Schoep Contracting LLC → Crusher #1; 2012-10-24 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Eugene  Schoep et al → Crusher #1; 2012-10-24 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Eugene  Schoep et al → Schoep Contracting LLC; 2012-10-24 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Phillip  Schoep et al → Schoep Contracting LLC; 2012-10-24 to current/open; source msha-controller-operator-history