# Relationship history for MSHA mine 3200828

Current hierarchy: **Bruce Alan  Dokken → Dokken Construction, Inc. → Dokken Construction, Inc.**

- 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:** Dokken Construction, Inc. → Dokken Construction, Inc.; 2007-05-08 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Bruce Alan  Dokken et al → Dokken Construction, Inc.; 2007-05-08 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Bruce Alan  Dokken et al → Dokken Construction, Inc.; 2007-05-08 to current/open; source msha-controller-operator-history