# Relationship history for MSHA mine 5002018

Current hierarchy: **Jeremy J  Sidney; James L  Sidney; JoAnn  Sidney → Alaska Juneau Construction → Powerscreen 2100**

- 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:** JoAnn  Sidney et al → Powerscreen 2100; 2014-07-01 to 2016-04-30; source msha-controller-operator-history
- **operator_operates_mine:** Alaska Juneau Construction → Powerscreen 2100; 2014-08-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** JoAnn  Sidney et al → Alaska Juneau Construction; 2014-08-01 to 2016-04-30; source msha-controller-operator-history
- **controller_controls_operator:** James L  Sidney et al → Alaska Juneau Construction; 2014-08-01 to 2016-04-30; source msha-controller-operator-history
- **controller_controls_mine:** Jeremy J  Sidney et al → Powerscreen 2100; 2016-05-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jeremy J  Sidney et al → Alaska Juneau Construction; 2016-05-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** JoAnn  Sidney et al → Alaska Juneau Construction; 2016-05-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** James L  Sidney et al → Alaska Juneau Construction; 2016-05-01 to current/open; source msha-controller-operator-history