# Relationship history for MSHA mine 2100693

Current hierarchy: **Rick  Schulke; Mark  Hawkinson → Coon's Aggregate Supply, LLC → Coons Aggregate Supply, LLC**

- 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

- **operator_operates_mine:** Wissota Sand & Gravel Co. → Coons Aggregate Supply, LLC; 1950-01-01 to 2012-08-12; source msha-controller-operator-history
- **controller_controls_mine:** Wissota Sand & Gravel Company → Coons Aggregate Supply, LLC; 1950-01-01 to 2019-10-30; source msha-controller-operator-history
- **controller_controls_operator:** Wissota Sand & Gravel Company → Wissota Sand & Gravel Co.; 1950-01-01 to 2012-08-12; source msha-controller-operator-history
- **operator_operates_mine:** Coon's Aggregate Supply, LLC → Coons Aggregate Supply, LLC; 2012-08-13 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Rick  Schulke et al → Coons Aggregate Supply, LLC; 2012-08-13 to 2021-07-11; source msha-controller-operator-history
- **controller_controls_operator:** Rick  Schulke et al → Coon's Aggregate Supply, LLC; 2012-08-13 to 2021-07-11; source msha-controller-operator-history
- **controller_controls_operator:** Mark  Hawkinson et al → Coon's Aggregate Supply, LLC; 2012-08-13 to 2021-07-11; source msha-controller-operator-history
- **controller_controls_mine:** WSG Acquisition Corp → Coons Aggregate Supply, LLC; 2019-10-31 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** WSG Acquisition Corp → Wissota Sand & Gravel Co.; 2019-10-31 to 2012-08-12; source msha-controller-operator-history
- **controller_controls_mine:** Rick  Schulke et al → Coons Aggregate Supply, LLC; 2021-07-12 to 2024-05-05; source msha-controller-operator-history
- **controller_controls_operator:** Rick  Schulke et al → Coon's Aggregate Supply, LLC; 2021-07-12 to 2024-05-05; source msha-controller-operator-history
- **controller_controls_operator:** Paul  Hawkinson et al → Coon's Aggregate Supply, LLC; 2021-07-12 to 2024-05-05; source msha-controller-operator-history
- **controller_controls_mine:** Mark  Hawkinson et al → Coons Aggregate Supply, LLC; 2024-05-06 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Mark  Hawkinson et al → Coon's Aggregate Supply, LLC; 2024-05-06 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Rick  Schulke et al → Coon's Aggregate Supply, LLC; 2024-05-06 to current/open; source msha-controller-operator-history