# Relationship history for MSHA mine 3200907

Current hierarchy: **Anthony  Lorenz; Joshua  Lorenz → Mikkelsen Aggregates LLC → Screenplant**

- 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:** Monte  Mikkelsen et al → Screenplant; 2000-08-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Mikkelsen Aggregates LLP → Screenplant; 2011-07-28 to 2015-02-08; source msha-controller-operator-history
- **controller_controls_operator:** Monte  Mikkelsen et al → Mikkelsen Aggregates LLP; 2011-07-28 to 2015-02-08; source msha-controller-operator-history
- **controller_controls_operator:** Randy  Mikkelsen et al → Mikkelsen Aggregates LLP; 2011-07-28 to 2015-02-08; source msha-controller-operator-history
- **operator_operates_mine:** Mikkelsen Aggregates LLC → Screenplant; 2015-02-09 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Joshua  Lorenz et al → Screenplant; 2015-02-09 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Joshua  Lorenz et al → Mikkelsen Aggregates LLC; 2015-02-09 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Anthony  Lorenz et al → Mikkelsen Aggregates LLC; 2015-02-09 to current/open; source msha-controller-operator-history