# Relationship history for MSHA mine 1200722

Current hierarchy: **Kristopher J  Kosiba → Morocco Sand and Gravel Inc → Morocco Sand and Gravel Inc**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-18T09:31:49.615908+00:00

## Valid-time edges

- **operator_operates_mine:** Morocco Sand & Gravel Company → Morocco Sand and Gravel Inc; 1950-01-01 to 1997-07-28; source msha-controller-operator-history
- **controller_controls_mine:** Wallace E Kosiba et al → Morocco Sand and Gravel Inc; 1950-01-01 to 1997-07-28; source msha-controller-operator-history
- **controller_controls_operator:** Wallace E Kosiba et al → Morocco Sand & Gravel Company; 1950-01-01 to 1997-07-28; source msha-controller-operator-history
- **operator_operates_mine:** Northwest Indiana Aggregates Company Inc → Morocco Sand and Gravel Inc; 1997-07-29 to 2006-07-25; source msha-controller-operator-history
- **controller_controls_mine:** James A  Kosiba → Morocco Sand and Gravel Inc; 1997-07-29 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** James A  Kosiba → Northwest Indiana Aggregates Company Inc; 1997-07-29 to 2006-07-25; source msha-controller-operator-history
- **operator_operates_mine:** Morocco Sand & Gravel Inc → Morocco Sand and Gravel Inc; 2006-07-26 to 2013-07-31; source msha-controller-operator-history
- **controller_controls_mine:** James A  Kosiba → Morocco Sand and Gravel Inc; 2006-07-26 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** James A  Kosiba → Morocco Sand & Gravel Inc; 2006-07-26 to 2013-07-31; source msha-controller-operator-history
- **operator_operates_mine:** Morocco Sand and Gravel Inc → Morocco Sand and Gravel Inc; 2013-08-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Kristopher J  Kosiba → Morocco Sand and Gravel Inc; 2013-08-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Kristopher J  Kosiba → Morocco Sand and Gravel Inc; 2013-08-01 to current/open; source msha-controller-operator-history