# Relationship history for MSHA mine 2302340

Current hierarchy: **American Environmental Services Inc; Continental Cement Company LLC → Green America Recycling, LLC → Hannibal Plant**

- 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:** Green America Recycling, LLC → Hannibal Plant; 2006-08-23 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Continental Cement Company LLC et al → Hannibal Plant; 2006-08-23 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Continental Cement Company LLC et al → Green America Recycling, LLC; 2006-08-23 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** American Environmental Services Inc et al → Green America Recycling, LLC; 2006-08-23 to current/open; source msha-controller-operator-history