# Relationship history for MSHA mine 2002685

Current hierarchy: **1442246 AB Ltd → CSI Sands NE, Ltd. → Pointe North**

- 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:** Sand Products Corp → Pointe North; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Sand Products Corporation → Pointe North; 1981-10-01 to 2017-11-30; source msha-controller-operator-history
- **controller_controls_operator:** Sand Products Corp → Sand Products Corporation; 1981-10-01 to 2017-11-30; source msha-controller-operator-history
- **operator_operates_mine:** CSI Sands NE LTD. → Pointe North; 2017-12-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** 1442246 AB Ltd → Pointe North; 2017-12-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** 1442246 AB Ltd → CSI Sands NE LTD.; 2017-12-01 to current/open; source msha-controller-operator-history