# Relationship history for MSHA mine 1002145

Current hierarchy: **CCI  (Clyde Companies Inc) → DePatco, Inc. → 3848 Cedar Rapids RC2**

- 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:** Greg L  Stoddard  et al → 3848 Cedar Rapids RC2; 2006-07-18 to 2020-08-19; source msha-controller-operator-history
- **operator_operates_mine:** D & B Aggregate → 3848 Cedar Rapids RC2; 2007-12-19 to 2008-07-23; source msha-controller-operator-history
- **controller_controls_mine:** Darrel  Ker → 3848 Cedar Rapids RC2; 2007-12-19 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Darrel  Ker → D & B Aggregate; 2007-12-19 to 2008-07-23; source msha-controller-operator-history
- **operator_operates_mine:** RBH Gravel LLC → 3848 Cedar Rapids RC2; 2008-07-24 to 2012-06-12; source msha-controller-operator-history
- **controller_controls_mine:** Frank  VanDerSloot → 3848 Cedar Rapids RC2; 2008-07-24 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Frank  VanDerSloot → RBH Gravel LLC; 2008-07-24 to 2012-06-12; source msha-controller-operator-history
- **operator_operates_mine:** DePatco, Inc. → 3848 Cedar Rapids RC2; 2012-06-13 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Greg L  Stoddard  et al → DePatco, Inc.; 2012-06-13 to 2020-08-19; source msha-controller-operator-history
- **controller_controls_mine:** CCI  (Clyde Companies Inc) → 3848 Cedar Rapids RC2; 2020-08-20 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** CCI  (Clyde Companies Inc) → DePatco, Inc.; 2020-08-20 to current/open; source msha-controller-operator-history