# Relationship history for MSHA mine 4703647

Current hierarchy: **1442246 AB Ltd → CSI Sands (Wisconsin) Ltd. → CSI Sands Wisconsin Ltd.**

- 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:** Fred Weber, Inc. → CSI Sands Wisconsin Ltd.; 1997-11-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Coal Creek Energy LLC et al → CSI Sands Wisconsin Ltd.; 2008-06-03 to 2012-04-22; source msha-controller-operator-history
- **controller_controls_mine:** Synergy Materials Inc et al → CSI Sands Wisconsin Ltd.; 2012-04-23 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Arcadia Sand LLC → CSI Sands Wisconsin Ltd.; 2012-11-19 to 2013-03-13; source msha-controller-operator-history
- **controller_controls_mine:** Hunt and Harvest Solutions, LLC → CSI Sands Wisconsin Ltd.; 2012-11-19 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Hunt and Harvest Solutions, LLC → Arcadia Sand LLC; 2012-11-19 to 2013-03-13; source msha-controller-operator-history
- **operator_operates_mine:** Iron Mountain Trap Rock → CSI Sands Wisconsin Ltd.; 2013-03-14 to 2013-11-30; source msha-controller-operator-history
- **controller_controls_operator:** Fred Weber, Inc. → Iron Mountain Trap Rock; 2013-03-14 to 2013-11-30; source msha-controller-operator-history
- **operator_operates_mine:** Mississippi Sand, LLC. → CSI Sands Wisconsin Ltd.; 2013-12-01 to 2017-03-16; source msha-controller-operator-history
- **controller_controls_operator:** Coal Creek Energy LLC et al → Mississippi Sand, LLC.; 2013-12-01 to 2012-04-22; source msha-controller-operator-history
- **controller_controls_operator:** Fred Weber Inc et al → Mississippi Sand, LLC.; 2013-12-01 to 2012-04-22; source msha-controller-operator-history
- **controller_controls_operator:** Synergy Materials Inc et al → Mississippi Sand, LLC.; 2013-12-01 to 2017-03-16; source msha-controller-operator-history
- **controller_controls_operator:** Cemtech International Inc et al → Mississippi Sand, LLC.; 2013-12-01 to 2017-03-16; source msha-controller-operator-history
- **controller_controls_mine:** 1442246 AB Ltd → CSI Sands Wisconsin Ltd.; 2014-11-24 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** CSI Sands (Wisconsin) Ltd. → CSI Sands Wisconsin Ltd.; 2017-03-17 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** 1442246 AB Ltd → CSI Sands (Wisconsin) Ltd.; 2017-03-17 to current/open; source msha-controller-operator-history