# Relationship history for MSHA mine 2200753

Current hierarchy: **Kevin  Bowen; Ryan  Morales; Jeff  Bartlam → Gulf Coast Sand, LLC → Gulf Coast Sand, LLC**

- 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

- **operator_operates_mine:** D K Aggregates LLC → Gulf Coast Sand, LLC; 2003-12-11 to 2009-03-08; source msha-controller-operator-history
- **controller_controls_mine:** Don  Parker  et al → Gulf Coast Sand, LLC; 2003-12-11 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Don  Parker  et al → D K Aggregates LLC; 2003-12-11 to 2009-03-08; source msha-controller-operator-history
- **controller_controls_operator:** Murray  Moran  et al → D K Aggregates LLC; 2003-12-11 to 2009-03-08; source msha-controller-operator-history
- **operator_operates_mine:** Blackwell Aggregates Inc. → Gulf Coast Sand, LLC; 2009-03-09 to 2009-10-04; source msha-controller-operator-history
- **controller_controls_mine:** Mass P  Blackwell → Gulf Coast Sand, LLC; 2009-03-09 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Mass P  Blackwell → Blackwell Aggregates Inc.; 2009-03-09 to 2009-10-04; source msha-controller-operator-history
- **operator_operates_mine:** DK Aggregates, LLC → Gulf Coast Sand, LLC; 2009-10-05 to 2012-05-27; source msha-controller-operator-history
- **controller_controls_operator:** Don  Parker  et al → DK Aggregates, LLC; 2009-10-05 to 2012-05-27; source msha-controller-operator-history
- **controller_controls_operator:** Murray  Moran  et al → DK Aggregates, LLC; 2009-10-05 to 2012-05-27; source msha-controller-operator-history
- **controller_controls_mine:** Jerald  Crump et al → Gulf Coast Sand, LLC; 2012-01-30 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Sun Coast Contracting LLC → Gulf Coast Sand, LLC; 2012-05-28 to 2013-01-13; source msha-controller-operator-history
- **controller_controls_operator:** Jerald  Crump et al → Sun Coast Contracting LLC; 2012-05-28 to 2013-01-13; source msha-controller-operator-history
- **controller_controls_operator:** Ryan  Hess et al → Sun Coast Contracting LLC; 2012-05-28 to 2013-01-13; source msha-controller-operator-history
- **operator_operates_mine:** Shale Support Holdings LLC → Gulf Coast Sand, LLC; 2013-01-14 to 2021-12-08; source msha-controller-operator-history
- **controller_controls_mine:** Michel B  Moreno et al → Gulf Coast Sand, LLC; 2013-01-14 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Michel B  Moreno et al → Shale Support Holdings LLC; 2013-01-14 to 2021-12-08; source msha-controller-operator-history
- **operator_operates_mine:** Gulf Coast Sand, LLC → Gulf Coast Sand, LLC; 2021-12-09 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Kevin  Bowen et al → Gulf Coast Sand, LLC; 2021-12-09 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Kevin  Bowen et al → Gulf Coast Sand, LLC; 2021-12-09 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Ryan  Morales et al → Gulf Coast Sand, LLC; 2021-12-09 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jeff  Bartlam et al → Gulf Coast Sand, LLC; 2021-12-09 to current/open; source msha-controller-operator-history