However , after the two main employers , Pertusola Sud and Montedison , collapsed by the late 1980s , Crotone was in economic crisis , with many residents losing their jobs and leaving to find work elsewhere .
In the 1930s its population doubled .
After the two main employers , Pertusola Sud and Montedison , collapsed by the late 1980s , Crotone was in economic crisis , with many residents losing their jobs and leaving to find work elsewhere .
In the 1930s its population doubled .