# Relationship history for MSHA mine 4609414

Current hierarchy: **SDC LLC; Cox Enterprises LLC → Commonwealth Mining, LLC → HWM #73**

- 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:** Cox Enterprises et al → HWM #73; 2010-03-03 to 2018-12-31; source msha-controller-operator-history
- **operator_operates_mine:** Commonwealth Mining, LLC → HWM #73; 2011-04-18 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Cox Enterprises et al → Commonwealth Mining, LLC; 2011-04-18 to 2018-12-31; source msha-controller-operator-history
- **controller_controls_operator:** L C Management et al → Commonwealth Mining, LLC; 2011-04-18 to 2018-12-31; source msha-controller-operator-history
- **controller_controls_mine:** SDC LLC et al → HWM #73; 2019-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** SDC LLC et al → Commonwealth Mining, LLC; 2019-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Cox Enterprises LLC et al → Commonwealth Mining, LLC; 2019-01-01 to current/open; source msha-controller-operator-history