# Relationship history for MSHA mine 1302278

Current hierarchy: **Alfredo S  Garcia → Crushed Aggregate Products LLC → Red Oak Quarry**

- 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:** Gary A  Hopp → Red Oak Quarry; 1998-01-13 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Western Iowa Limestone, Inc. → Red Oak Quarry; 2004-02-24 to 2006-06-11; source msha-controller-operator-history
- **controller_controls_operator:** Gary A  Hopp → Western Iowa Limestone, Inc.; 2004-02-24 to 2006-06-11; source msha-controller-operator-history
- **operator_operates_mine:** Natural Materials, L.L.C. → Red Oak Quarry; 2006-06-12 to 2008-03-02; source msha-controller-operator-history
- **controller_controls_mine:** Ron J  Beach et al → Red Oak Quarry; 2006-06-12 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Ron J  Beach et al → Natural Materials, L.L.C.; 2006-06-12 to 2008-03-02; source msha-controller-operator-history
- **controller_controls_operator:** Gary L  Weihs et al → Natural Materials, L.L.C.; 2006-06-12 to 2008-03-02; source msha-controller-operator-history
- **operator_operates_mine:** Crushed Aggregate Products LLC → Red Oak Quarry; 2008-03-03 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Alfredo S  Garcia → Red Oak Quarry; 2008-03-03 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Alfredo S  Garcia → Crushed Aggregate Products LLC; 2008-03-03 to current/open; source msha-controller-operator-history