# Relationship history for MSHA mine 3402056

Current hierarchy: **Dolese Brothers Company → Dolese Bros. Co. → East Sand Plant**

- 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

- **controller_controls_mine:** Dolese Brothers Company → East Sand Plant; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** M & M SAND COMPANY LLC → East Sand Plant; 2007-11-21 to 2009-03-31; source msha-controller-operator-history
- **controller_controls_mine:** Lee M  McNulty et al → East Sand Plant; 2007-11-21 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Lee M  McNulty et al → M & M SAND COMPANY LLC; 2007-11-21 to 2009-03-31; source msha-controller-operator-history
- **controller_controls_operator:** Billy Don  Matthews et al → M & M SAND COMPANY LLC; 2007-11-21 to 2009-03-31; source msha-controller-operator-history
- **operator_operates_mine:** Dolese Bros. Co. → East Sand Plant; 2009-04-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Dolese Brothers Company → Dolese Bros. Co.; 2009-04-01 to current/open; source msha-controller-operator-history