# Relationship history for MSHA mine 3304600

Current hierarchy: **Japheth D Mast; David  Mast; Melinda  Mast → Route 3 Stone Products LLC → Route 3 Stone Products LLC**

- 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

- **operator_operates_mine:** Crushers Stone Products LLC → Route 3 Stone Products LLC; 2009-05-01 to 2017-12-31; source msha-controller-operator-history
- **controller_controls_mine:** Dan A  Stauffer → Route 3 Stone Products LLC; 2009-05-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Dan A  Stauffer → Crushers Stone Products LLC; 2009-05-01 to 2017-12-31; source msha-controller-operator-history
- **operator_operates_mine:** Route 3 Stone Products LLC → Route 3 Stone Products LLC; 2018-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Japheth D Mast et al → Route 3 Stone Products LLC; 2018-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Japheth D Mast et al → Route 3 Stone Products LLC; 2018-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Melinda  Mast et al → Route 3 Stone Products LLC; 2018-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** David  Mast et al → Route 3 Stone Products LLC; 2018-01-01 to current/open; source msha-controller-operator-history