reporting nicole collins is in texas tonight with more on the search for victims and hopefully more survivors here. nicole. >> reporter: good evening frank, it is certainly a search and rescue mission still at this late hour here in this small tight nit community of a town called west here in central texas. those workers emergency workers are continuing that pain staking process of sifting through the debris looking for any sign of life. >> reporter: four densely populated blocks flattened near the site of the west fertilizer company in texas. what lies beneath is anyone's guess. the explosion site not yet cleared for emergency workers to return because of the presence of ammonium nitrate. >> this is a fertilizer company, as it is it has that type of component in it. and it is a volatile product. >> reporter: officials initially reported as many as 15 dead and more than 160 injured. doctors, many off duty rushed to help treating a variety of injuries. >> we've seen what you would expect from blast injuries. a lot of skin, soft tissue injuries. small wounds, large wounds. >> reporter: the chao