# Relationship history for MSHA mine 0100578

Current hierarchy: **AFTA, LLC; Steve  Shaw → COUCH AGGREGATES LLC → BELLWOOD SAND 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

- **operator_operates_mine:** W M Donnell Sand Company → BELLWOOD SAND PLANT; 1950-01-01 to 1995-01-31; source msha-controller-operator-history
- **controller_controls_mine:** W M  Donnell → BELLWOOD SAND PLANT; 1950-01-01 to 1995-01-31; source msha-controller-operator-history
- **controller_controls_operator:** W M  Donnell → W M Donnell Sand Company; 1950-01-01 to 1995-01-31; source msha-controller-operator-history
- **controller_controls_mine:** Superfos America Inc → BELLWOOD SAND PLANT; 1980-02-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Couch Construction L P → BELLWOOD SAND PLANT; 1995-02-01 to 2000-09-17; source msha-controller-operator-history
- **controller_controls_operator:** Superfos America Inc → Couch Construction L P; 1995-02-01 to 2000-09-17; source msha-controller-operator-history
- **operator_operates_mine:** Couch Ready Mix USA → BELLWOOD SAND PLANT; 2000-09-18 to 2000-09-30; source msha-controller-operator-history
- **controller_controls_mine:** Ready Mix USA Inc → BELLWOOD SAND PLANT; 2000-09-18 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Ready Mix USA Inc → Couch Ready Mix USA; 2000-09-18 to 2000-09-30; source msha-controller-operator-history
- **operator_operates_mine:** Couch Ready Mix USA Aggregates Div → BELLWOOD SAND PLANT; 2000-10-01 to 2011-12-30; source msha-controller-operator-history
- **controller_controls_mine:** Ready Mix USA Inc → BELLWOOD SAND PLANT; 2000-10-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Ready Mix USA Inc → Couch Ready Mix USA Aggregates Div; 2000-10-01 to 2011-12-30; source msha-controller-operator-history
- **operator_operates_mine:** Ready Mix USA, LLC → BELLWOOD SAND PLANT; 2011-12-31 to 2012-06-29; source msha-controller-operator-history
- **controller_controls_mine:** Cemex S A → BELLWOOD SAND PLANT; 2011-12-31 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Cemex S A → Ready Mix USA, LLC; 2011-12-31 to 2012-06-29; source msha-controller-operator-history
- **operator_operates_mine:** Couch Aggregates LLC → BELLWOOD SAND PLANT; 2012-06-30 to 2017-01-30; source msha-controller-operator-history
- **controller_controls_mine:** Steve  Shaw et al → BELLWOOD SAND PLANT; 2012-06-30 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Steve  Shaw et al → Couch Aggregates LLC; 2012-06-30 to 2017-01-30; source msha-controller-operator-history
- **operator_operates_mine:** Couch Aggregates LLC → BELLWOOD SAND PLANT; 2017-01-31 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Aggregates Holding LLC et al → BELLWOOD SAND PLANT; 2017-01-31 to 2020-10-15; source msha-controller-operator-history
- **controller_controls_operator:** Aggregates Holding LLC et al → Couch Aggregates LLC; 2017-01-31 to 2020-10-15; source msha-controller-operator-history
- **controller_controls_operator:** Dunn Investment Company et al → Couch Aggregates LLC; 2017-01-31 to 2020-10-15; source msha-controller-operator-history
- **controller_controls_mine:** Green Rock Mining LLC → BELLWOOD SAND PLANT; 2020-10-16 to 2024-07-11; source msha-controller-operator-history
- **controller_controls_operator:** Green Rock Mining LLC → Couch Aggregates LLC; 2020-10-16 to 2024-07-11; source msha-controller-operator-history
- **controller_controls_mine:** Steve  Shaw et al → BELLWOOD SAND PLANT; 2024-07-12 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Steve  Shaw et al → Couch Aggregates LLC; 2024-07-12 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** AFTA, LLC et al → Couch Aggregates LLC; 2024-07-12 to current/open; source msha-controller-operator-history