# Relationship history for MSHA mine 3402188

Current hierarchy: **Josh  Davis; Henry  Davis → Circle D Construction & Excavation, LLC → Circle D Material Pit #1**

- 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:** Circle D Construction & Excavation, LLC → Circle D Material Pit #1; 2019-02-22 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Josh  Davis et al → Circle D Material Pit #1; 2019-02-22 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Josh  Davis et al → Circle D Construction & Excavation, LLC; 2019-02-22 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Henry  Davis et al → Circle D Construction & Excavation, LLC; 2019-02-22 to current/open; source msha-controller-operator-history