... interpret the drivers causing farmers to evacuate and in some cases abandon farms, the agronomic and social impacts of the evacuation, the rationale and execution of livestock evacuation, and the factors ... rural areas from heavy ashfall hazards Over 20,000 cattle were evacuated from areas impacted by heavy ashfalls in the weeks following the eruption warnings have dramatically reduced casualties from ... Northern Patagonia, Chile Preventative evacuation of ~5,000 people occurred from proximal areas due to Lara 2009 potential pyroclastic flow and lahar hazards, particular Chaiten town Some evacuation...