# Relationship history for MSHA mine 1800792

Current hierarchy: **Miguel  Lambert → Maryland Natural Resource Solutions LLC → Jenkins Property**

- 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

- **operator_operates_mine:** Maryland Natural Resource Solutions LLC → Jenkins Property; 2013-05-21 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Michael  Post et al → Jenkins Property; 2013-05-21 to 2019-11-19; source msha-controller-operator-history
- **controller_controls_operator:** Michael  Post et al → Maryland Natural Resource Solutions LLC; 2013-05-21 to 2019-11-19; source msha-controller-operator-history
- **controller_controls_operator:** Timothy  Hurley et al → Maryland Natural Resource Solutions LLC; 2013-05-21 to 2019-11-19; source msha-controller-operator-history
- **controller_controls_mine:** Miguel  Lambert → Jenkins Property; 2019-11-20 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Miguel  Lambert → Maryland Natural Resource Solutions LLC; 2019-11-20 to current/open; source msha-controller-operator-history