# Relationship history for MSHA mine 1202265

Current hierarchy: **Scott  Alexander; Tim  Townhill → Nugent Sand Co → Bethlehem Sand and Gravel**

- 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:** Bethlehem Sand & Gravel Co LLC → Bethlehem Sand and Gravel; 2000-02-01 to 2005-09-15; source msha-controller-operator-history
- **controller_controls_mine:** Allied Ready Mix Co LLC  et al → Bethlehem Sand and Gravel; 2000-02-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Allied Ready Mix Co LLC  et al → Bethlehem Sand & Gravel Co LLC; 2000-02-01 to 2005-09-15; source msha-controller-operator-history
- **controller_controls_operator:** Louisville Paving Co  et al → Bethlehem Sand & Gravel Co LLC; 2000-02-01 to 2005-09-15; source msha-controller-operator-history
- **operator_operates_mine:** Brooks Sand & Gravel LLC → Bethlehem Sand and Gravel; 2005-09-16 to 2006-09-10; source msha-controller-operator-history
- **controller_controls_mine:** Todd  Blue  et al → Bethlehem Sand and Gravel; 2005-09-16 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Todd  Blue  et al → Brooks Sand & Gravel LLC; 2005-09-16 to 2006-09-10; source msha-controller-operator-history
- **controller_controls_operator:** Hollis  Smith  et al → Brooks Sand & Gravel LLC; 2005-09-16 to 2006-09-10; source msha-controller-operator-history
- **operator_operates_mine:** Johnson Construction Materials LLC → Bethlehem Sand and Gravel; 2006-09-11 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Richard  Johnson Jr → Bethlehem Sand and Gravel; 2006-09-11 to 2010-04-19; source msha-controller-operator-history
- **controller_controls_operator:** Richard  Johnson Jr → Johnson Construction Materials LLC; 2006-09-11 to 2010-04-19; source msha-controller-operator-history
- **controller_controls_mine:** Scott  Alexander et al → Bethlehem Sand and Gravel; 2010-04-20 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Scott  Alexander et al → Johnson Construction Materials LLC; 2010-04-20 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Tim  Townhill et al → Johnson Construction Materials LLC; 2010-04-20 to current/open; source msha-controller-operator-history