# Relationship history for MSHA mine 0801408

Current hierarchy: **Atlantic Materials Partners LLC; BWI I 4 Sand LLC → I-4 Sand Company LLC → Conrad Sand**

- 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:** Ashland Inc → Conrad Sand; 2003-03-31 to 2006-08-27; source msha-controller-operator-history
- **controller_controls_mine:** CRH PLC → Conrad Sand; 2006-08-28 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Conrad Yelvington Distributors → Conrad Sand; 2015-12-08 to 2026-01-08; source msha-controller-operator-history
- **controller_controls_operator:** Ashland Inc → Conrad Yelvington Distributors; 2015-12-08 to 2006-08-27; source msha-controller-operator-history
- **controller_controls_operator:** CRH PLC → Conrad Yelvington Distributors; 2015-12-08 to 2026-01-08; source msha-controller-operator-history
- **controller_controls_mine:** Blue Water Industries Holdings LLC → Conrad Sand; 2022-10-04 to 2024-05-04; source msha-controller-operator-history
- **controller_controls_mine:** Baker Aggregates Investments II LLC → Conrad Sand; 2024-05-05 to 2026-01-08; source msha-controller-operator-history
- **operator_operates_mine:** I-4 Sand Company LLC → Conrad Sand; 2026-01-09 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Blue Water Industries Holdings LLC → I-4 Sand Company LLC; 2026-01-09 to 2024-05-04; source msha-controller-operator-history
- **controller_controls_operator:** Baker Aggregates Investments II LLC → I-4 Sand Company LLC; 2026-01-09 to 2026-01-08; source msha-controller-operator-history
- **controller_controls_mine:** BWI I 4 Sand LLC et al → Conrad Sand; 2026-01-09 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** BWI I 4 Sand LLC et al → I-4 Sand Company LLC; 2026-01-09 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Atlantic Materials Partners LLC et al → I-4 Sand Company LLC; 2026-01-09 to current/open; source msha-controller-operator-history