# Relationship history for MSHA mine 1519871

Current hierarchy: **Charles  Collins → CKJ Enterprises, Inc. → Highwall Miner #2**

- 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:** Charles  Collins → Highwall Miner #2; 2013-06-27 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Charles  Collins → Highwall Miner #2; 2014-12-08 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** JRC Mining, Inc → Highwall Miner #2; 2019-10-03 to 2022-08-31; source msha-controller-operator-history
- **controller_controls_operator:** Charles  Collins → JRC Mining, Inc; 2019-10-03 to 2022-08-31; source msha-controller-operator-history
- **operator_operates_mine:** CKJ Enterprises, Inc. → Highwall Miner #2; 2022-09-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Charles  Collins → CKJ Enterprises, Inc.; 2022-09-01 to current/open; source msha-controller-operator-history