# Relationship history for MSHA mine 2103943

Current hierarchy: **Jim  Voda; Martin  Preusser → Pentagon Materials Inc. DBA Prior Lake Aggregates → LS Schultz**

- 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:** Martin  Preusser et al → LS Schultz; 2018-02-20 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Prior Lake Aggregates → LS Schultz; 2019-05-08 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Martin  Preusser et al → Prior Lake Aggregates; 2019-05-08 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jim  Voda et al → Prior Lake Aggregates; 2019-05-08 to current/open; source msha-controller-operator-history