# Relationship history for MSHA mine 3609453

Current hierarchy: **Jason T Burke → M M Quarries Inc → Castlemont #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: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **controller_controls_mine:** Chad H  Hollenbeck → Castlemont #1; 2005-06-07 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Rock Ridge Stone → Castlemont #1; 2006-07-25 to 2015-06-01; source msha-controller-operator-history
- **controller_controls_operator:** Chad H  Hollenbeck → Rock Ridge Stone; 2006-07-25 to 2015-06-01; source msha-controller-operator-history
- **operator_operates_mine:** Rock Ridge Stone → Castlemont #1; 2015-06-02 to 2020-06-28; source msha-controller-operator-history
- **controller_controls_mine:** August F  DeLuca → Castlemont #1; 2015-06-02 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** August F  DeLuca → Rock Ridge Stone; 2015-06-02 to 2020-06-28; source msha-controller-operator-history
- **operator_operates_mine:** M M Quarries Inc → Castlemont #1; 2020-06-29 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Jason T Burke → Castlemont #1; 2020-06-29 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jason T Burke → M M Quarries Inc; 2020-06-29 to current/open; source msha-controller-operator-history