Police Inspector Marry Anne Torres, Batangas Police Provincial Office Information chief, told INQUIRER.net in a text message Saturday that the incident happened at 7 p.m Friday at the Central Azucarera Don Pedro in Barangay (village) Lumbangan, Nasugbu.
The victims, all residents of Putat village, were: Hernando Caraig, Joemart Barrio, Rommel Vecinal, Edwin Sanchez, Jason Caraig, Avelino Malarayap, Marvin Dela Cruz, Dexter Caraig, Noriel Caraig, Jeffrey Barion, Albert Caraig, Ariel Caraig, Arnel Caraig, Lester Caraig, Leandro Caraig, and Jun Unas.
As of posting time, nine were discharged from the Western Medical Center in Balayan municipality.
The police report said a certain Mario Dela Cuesta controlled two cylinders in the system, one containing water while the other, caustic soda used for cleaning.
Torres said the workers were cleaning the interior of the steam pipe, where water sprinklers were continuously open.
While all the victims were inside the pipe, the water sprinklers suddenly showered the workers with caustic soda that burned their skins.
Police added that Dela Cuesta may have accidentally turned on the valve containing the toxic liquid.