# Relationship history for MSHA mine 2003322

Current hierarchy: **Daniel  Groenke → Barber Creek Sand & Gravel, Inc. → Screener RM 22**

- 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:** Daniel  Groenke → Screener RM 22; 1984-12-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Kinnee Trucking Inc. → Screener RM 22; 2005-06-14 to 2006-08-27; source msha-controller-operator-history
- **controller_controls_mine:** Jason W  Kinnee → Screener RM 22; 2005-06-14 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jason W  Kinnee → Kinnee Trucking Inc.; 2005-06-14 to 2006-08-27; source msha-controller-operator-history
- **operator_operates_mine:** Montcalm Aggregates → Screener RM 22; 2006-08-28 to 2016-07-25; source msha-controller-operator-history
- **controller_controls_mine:** James A  Zalud → Screener RM 22; 2006-08-28 to 2019-02-26; source msha-controller-operator-history
- **controller_controls_operator:** James A  Zalud → Montcalm Aggregates; 2006-08-28 to 2016-07-25; source msha-controller-operator-history
- **operator_operates_mine:** Barber Creek Sand & Gravel, Inc. → Screener RM 22; 2016-07-26 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Daniel  Groenke → Barber Creek Sand & Gravel, Inc.; 2016-07-26 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Daniel  Zalud → Screener RM 22; 2019-02-27 to 2022-04-30; source msha-controller-operator-history
- **controller_controls_operator:** Daniel  Zalud → Montcalm Aggregates; 2019-02-27 to 2016-07-25; source msha-controller-operator-history
- **controller_controls_mine:** Neil  Zalud → Screener RM 22; 2022-05-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Neil  Zalud → Montcalm Aggregates; 2022-05-01 to 2016-07-25; source msha-controller-operator-history