# Relationship history for MSHA mine 2003023

Current hierarchy: **RR Holdco, Inc. → Rieth-Riley Construction Co., Inc. → 7913 Plant**

- 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:** Rieth-Riley Construction Company Inc → 7913 Plant; 1950-01-01 to 2025-01-30; source msha-controller-operator-history
- **controller_controls_mine:** Thomas R  Irwin  et al → 7913 Plant; 1984-06-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** H & D Inc → 7913 Plant; 1997-01-01 to 2005-03-31; source msha-controller-operator-history
- **controller_controls_operator:** Thomas R  Irwin  et al → H & D Inc; 1997-01-01 to 2005-03-31; source msha-controller-operator-history
- **operator_operates_mine:** Rieth-Riley Construction Co., Inc. → 7913 Plant; 2005-04-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Rieth-Riley Construction Company Inc → Rieth-Riley Construction Co., Inc.; 2005-04-01 to 2025-01-30; source msha-controller-operator-history
- **controller_controls_mine:** RR Holdco, Inc. → 7913 Plant; 2025-01-31 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** RR Holdco, Inc. → Rieth-Riley Construction Co., Inc.; 2025-01-31 to current/open; source msha-controller-operator-history