# Relationship history for MSHA mine 2700455

Current hierarchy: **Christopher J  Bolton → C J BOLTON, INC. → MT WILLIAM/HENNIKER 606**

- 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:** Christopher J  Bolton → MT WILLIAM/HENNIKER 606; 1992-10-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** C J BOLTON, INC. → MT WILLIAM/HENNIKER 606; 2012-05-09 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Christopher J  Bolton → C J BOLTON, INC.; 2012-05-09 to current/open; source msha-controller-operator-history