# Relationship history for MSHA mine 4503602

Current hierarchy: **David G  Remlinger; Steve W Davison → Wetlands Creation, Inc. → Dredger Processing**

- 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:** Wetlands Creation, Inc. → Dredger Processing; 2006-05-24 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Steve W Davison et al → Dredger Processing; 2006-05-24 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Steve W Davison et al → Wetlands Creation, Inc.; 2006-05-24 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** David G  Remlinger et al → Wetlands Creation, Inc.; 2006-05-24 to current/open; source msha-controller-operator-history