# Relationship history for MSHA mine 4104760

Current hierarchy: **Arcosa, Inc → River Aggregates, LLC → River Aggregates Romayor 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: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **controller_controls_mine:** Clifford  Hahne et al → River Aggregates Romayor Plant; 2006-07-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Sunrise Materials → River Aggregates Romayor Plant; 2008-11-24 to 2010-06-06; source msha-controller-operator-history
- **controller_controls_operator:** Clifford  Hahne et al → Sunrise Materials; 2008-11-24 to 2010-06-06; source msha-controller-operator-history
- **operator_operates_mine:** Sunrise Materials → River Aggregates Romayor Plant; 2010-06-07 to 2011-03-31; source msha-controller-operator-history
- **controller_controls_mine:** Robert  VanTil → River Aggregates Romayor Plant; 2010-06-07 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Robert  VanTil → Sunrise Materials; 2010-06-07 to 2011-03-31; source msha-controller-operator-history
- **operator_operates_mine:** River Aggregates LLC → River Aggregates Romayor Plant; 2011-04-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Main Street Capital Corp et al → River Aggregates Romayor Plant; 2011-04-01 to 2013-06-14; source msha-controller-operator-history
- **controller_controls_operator:** Main Street Capital Corp et al → River Aggregates LLC; 2011-04-01 to 2013-06-14; source msha-controller-operator-history
- **controller_controls_operator:** Rob  VanTil et al → River Aggregates LLC; 2011-04-01 to 2013-06-14; source msha-controller-operator-history
- **controller_controls_mine:** Rob  Van Til et al → River Aggregates Romayor Plant; 2013-06-15 to 2021-04-08; source msha-controller-operator-history
- **controller_controls_operator:** Rob  Van Til et al → River Aggregates LLC; 2013-06-15 to 2021-04-08; source msha-controller-operator-history
- **controller_controls_operator:** Main Street Capital Corporation et al → River Aggregates LLC; 2013-06-15 to 2021-04-08; source msha-controller-operator-history
- **controller_controls_operator:** Carl  Davis et al → River Aggregates LLC; 2013-06-15 to 2021-04-08; source msha-controller-operator-history
- **controller_controls_mine:** Arcosa, Inc → River Aggregates Romayor Plant; 2021-04-09 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Arcosa, Inc → River Aggregates LLC; 2021-04-09 to current/open; source msha-controller-operator-history