More than 600 Honduran banana pickers are suing some of the world's biggest fruit growers and chemical manufacturers, claiming they distributed and used a US-banned pesticide in Central America that was known to cause sterility...Dow Chemical disputed [the charge]...Shell Oil spokeswoman Habiba Ewing said the company...was not able to comment...Chiquita spokesman Michael Mitchell said he...could not comment...Fresh Del Monte spokesman Bruce Jordan also said it had not yet been served with the complaint...Dole spokeswoman Freya Maneki said the company...had no comment.