# Relationship history for MSHA mine 4104361

Current hierarchy: **Darrel G  Dussetschleger → Stone Age Building and Landscape Products → Q1**

- 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

- **operator_operates_mine:** Chadwick's → Q1; 2002-04-24 to 2005-05-25; source msha-controller-operator-history
- **controller_controls_mine:** Jim  Chadwick → Q1; 2002-04-24 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jim  Chadwick → Chadwick's; 2002-04-24 to 2005-05-25; source msha-controller-operator-history
- **operator_operates_mine:** Stone Age Building and Landscape Products → Q1; 2005-05-26 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Darrel G  Dussetschleger → Q1; 2005-05-26 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Darrel G  Dussetschleger → Stone Age Building and Landscape Products; 2005-05-26 to current/open; source msha-controller-operator-history