# Relationship history for MSHA mine 1002227

Current hierarchy: **CCI  (Clyde Companies Inc) → DePatco, Inc. → 3804 CEC Screen Plant**

- 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 → 3804 CEC Screen Plant; 2006-07-18 to 2020-08-19; source msha-controller-operator-history
- **operator_operates_mine:** DePatco, Inc. → 3804 CEC Screen Plant; 2012-05-17 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Greg L  Stoddard  et al → DePatco, Inc.; 2012-05-17 to 2020-08-19; source msha-controller-operator-history
- **controller_controls_mine:** CCI  (Clyde Companies Inc) → 3804 CEC Screen Plant; 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