# Relationship history for MSHA mine 0200626

Current hierarchy: **Archer V  Shelton → Superior Companies → Camp Verde Pit & 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

- **operator_operates_mine:** Superior Companies → Camp Verde Pit & Plant; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Archer V  Shelton → Camp Verde Pit & Plant; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Archer V  Shelton → Superior Companies; 1950-01-01 to current/open; source msha-controller-operator-history