article_snippet: Staff at a piggery have been left shocked after arriving for work one morning only to be confronted by an 'ocean' of about 500 dead pigs.
article_snippet: It is believed that the pigs at the Pig Improvement Company (PIC) in Grong Grong, NSW, died of extreme heat exhaustion, after an air-conditioning system in the holding shed failed on February 23.
article_snippet: Over 500 pigs have died in a piggery in NSW due to heat exhaustion after an air-conditioner broke .
highlights_snippet: 500 dead pigs have been found in a NSW piggery .
  
highlights_snippet: 500 dead pigs is believed 500 dead pigs died from extreme heat exhaustion in Grong Grong .
  
highlights_snippet: Staff arrived into work on Monday to find an 'ocean' of dead pigs .
  