LEO A. ABAD, ROMEO ABELLA, MARNIE AGAPAY, FELECIANO S. BAHAN, RUEL R. BAHAN, ANGELITO CABAÑAS, JOVILITO G. MAESTRADO, JR., REPRESENTED BY HIS MOTHER, NENITA MAESTRADO, TONY L. MONTANTE, ALVIN D. PAL, VENJIE PLASQUITA, FRANKIE L. SABIO, AND MARIJUL O. UNDAP, PETITIONERS, VS. SAN ROQUE METALS, INC., RESPONDENT