# Relationship history for MSHA mine 3100140

Current hierarchy: **Wienerberger AG → Cherokee Sanford Group Llc → MORROW MINE**

- 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:** Hanford Brick Company Inc → MORROW MINE; 1950-01-01 to 2001-03-18; source msha-controller-operator-history
- **controller_controls_mine:** James  Hanford → MORROW MINE; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** James  Hanford → Hanford Brick Company Inc; 1950-01-01 to 2001-03-18; source msha-controller-operator-history
- **controller_controls_mine:** Wienerberger AG → MORROW MINE; 1997-12-12 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Cherokee Sanford Group Llc → MORROW MINE; 2001-03-19 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Wienerberger AG → Cherokee Sanford Group Llc; 2001-03-19 to current/open; source msha-controller-operator-history