article_snippet: Peter Thurston said a fourth man wearing a safety harness was found inside a nearby portable toilet.
article_snippet: It was not immediately clear if a fourth man wearing a safety harness had fallen into a nearby portable toilet or had been sitting inside when the collapse occurred.
highlights_snippet: Another man was found in a portable toilet breathing but seriously injured .
  
highlights_snippet: It was clear if Another man had fallen into the toilet or had been sitting when the accident occurred .