# Relationship history for MSHA mine 0505158

Current hierarchy: **James C  Marvel Jr → Brannan Sand and Gravel Company, LLC. → Pit 26-Nix**

- 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

- **controller_controls_mine:** James C  Marvel Jr → Pit 26-Nix; 1996-05-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Brannan Sand and Gravel Company, LLC. → Pit 26-Nix; 2022-10-07 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** James C  Marvel Jr → Brannan Sand and Gravel Company, LLC.; 2022-10-07 to current/open; source msha-controller-operator-history