# Relationship history for MSHA mine 4407294

Current hierarchy: **Douglas W  Vance → V2 Construction, Inc. → V-2  #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:** V2 Construction, Inc. → V-2  #1; 2012-03-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Douglas W  Vance → V-2  #1; 2012-03-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Douglas W  Vance → V2 Construction, Inc.; 2012-03-01 to current/open; source msha-controller-operator-history