# Relationship history for MSHA mine 1518957

Current hierarchy: **Charles  Collins → CKJ Enterprises, Inc → #8**

- 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:** Hattie F  Johnson → #8; 1993-06-30 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Spud Mining, Inc. → #8; 2005-12-27 to 2020-02-03; source msha-controller-operator-history
- **controller_controls_operator:** Hattie F  Johnson → Spud Mining, Inc.; 2005-12-27 to 2020-02-03; source msha-controller-operator-history
- **controller_controls_mine:** Charles  Collins → #8; 2014-12-08 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** CKJ Enterprises, Inc → #8; 2020-02-04 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Charles  Collins → CKJ Enterprises, Inc; 2020-02-04 to current/open; source msha-controller-operator-history