# Relationship history for MSHA mine 3610087

Current hierarchy: **Daniel R  Hawbaker → Glenn O Hawbakers inc → Kolberg Jaw 2650   S/N 405331**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **controller_controls_mine:** Daniel R  Hawbaker  et al → Kolberg Jaw 2650   S/N 405331; 1983-02-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Glenn O Hawbakers inc → Kolberg Jaw 2650   S/N 405331; 2013-10-23 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Daniel R  Hawbaker  et al → Glenn O Hawbakers inc; 2013-10-23 to current/open; source msha-controller-operator-history