# Relationship history for MSHA mine 0202733

Current hierarchy: **T J Dermot  Dunphy → Carlow Investors, LLC → Golden Buckskin**

- 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:** Blaser Aquisition Corporation → Golden Buckskin; 1997-10-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** American Sandstone → Golden Buckskin; 1997-11-01 to 2009-09-01; source msha-controller-operator-history
- **controller_controls_operator:** Blaser Aquisition Corporation → American Sandstone; 1997-11-01 to 2009-09-01; source msha-controller-operator-history
- **controller_controls_mine:** Donald L  Blaser → Golden Buckskin; 2007-09-24 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Cornerstone Materials LLC → Golden Buckskin; 2009-09-02 to 2009-09-29; source msha-controller-operator-history
- **controller_controls_operator:** Donald L  Blaser → Cornerstone Materials LLC; 2009-09-02 to 2009-09-29; source msha-controller-operator-history
- **operator_operates_mine:** Carlow Investors, LLC → Golden Buckskin; 2009-09-30 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** T J Dermot  Dunphy → Golden Buckskin; 2009-09-30 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** T J Dermot  Dunphy → Carlow Investors, LLC; 2009-09-30 to current/open; source msha-controller-operator-history