# Relationship history for MSHA mine 2200811

Current hierarchy: **Kevin  Bowen; Ryan  Morales; Jeff  Bartlam → Gulf Coast Sand, LLC → Dry 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: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **controller_controls_mine:** Michel B  Moreno et al → Dry Plant; 2013-01-14 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Shale Support Holdings LLC. → Dry Plant; 2013-02-02 to 2022-01-16; source msha-controller-operator-history
- **controller_controls_operator:** Michel B  Moreno et al → Shale Support Holdings LLC.; 2013-02-02 to 2022-01-16; source msha-controller-operator-history
- **controller_controls_mine:** Ryan  Morales et al → Dry Plant; 2021-12-09 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Gulf Coast Sand, LLC → Dry Plant; 2022-01-17 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Ryan  Morales et al → Gulf Coast Sand, LLC; 2022-01-17 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Kevin  Bowen et al → Gulf Coast Sand, LLC; 2022-01-17 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jeff  Bartlam et al → Gulf Coast Sand, LLC; 2022-01-17 to current/open; source msha-controller-operator-history