# Relationship history for MSHA mine 2103584

Current hierarchy: **Douglas A  Rupp → Rupp Construction Co., Inc. → Screening Plant SP 7**

- 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:** Douglas A  Rupp → Screening Plant SP 7; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Rupp Construction Co., Inc. → Screening Plant SP 7; 2007-06-05 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Douglas A  Rupp → Rupp Construction Co., Inc.; 2007-06-05 to current/open; source msha-controller-operator-history