# Relationship history for MSHA mine 2103817

Current hierarchy: **ERP Compliant Fuels, LLC → ERP Iron Ore, LLC → Plant 4**

- 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:** Mag Mining LLC → Plant 4; 2014-03-31 to 2017-01-29; source msha-controller-operator-history
- **controller_controls_mine:** Alan  Fritz  et al → Plant 4; 2014-03-31 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Alan  Fritz  et al → Mag Mining LLC; 2014-03-31 to 2017-01-29; source msha-controller-operator-history
- **controller_controls_operator:** Larry  Lehtinen  et al → Mag Mining LLC; 2014-03-31 to 2017-01-29; source msha-controller-operator-history
- **operator_operates_mine:** ERP Iron Ore, LLC → Plant 4; 2017-01-30 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** ERP Compliant Fuels, LLC → Plant 4; 2017-01-30 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** ERP Compliant Fuels, LLC → ERP Iron Ore, LLC; 2017-01-30 to current/open; source msha-controller-operator-history