Blast occurred at Oradell Animal Hospital in Paramus on Friday just before noon ; no fire reported but there was a helium leak . Man in critical condition is contract construction worker who suffered from lacerations and crushing-related injuries to his body . Two other workers reported respiratory complaints and other minor injuries ; none of 100 workers are employees at hospital . Around three hospital employees and 60 animals were in building including dogs , cats and one bird ; all escaped with no injuries .
Blast occurred at Oradell Animal Hospital in Paramus on Friday just before noon ; no fire reported but there was a helium leak . Man in critical condition is contract construction worker who suffered from lacerations and crushing-related injuries to his body . Two other workers reported respiratory complaints and other minor injuries ; none of three workers are employees at hospital . Around 100 hospital employees and 60 animals were in building including dogs , cats and one bird ; all escaped with no injuries .