00000nas##2200000za#4500 9.507004 CaOODSP 20200325133421 cr ||||||||||| 150406c2000||||xxc|| p o||||f| |0eng|d 2291-871X CaOODSP eng n-cn--- NE23-31E-PDF Canada. National Energy Board. Excavation and construction near pipelines [electronic resource] Additional title (within publication) : National Energy Board Pipeline Crossing Regulations Calgary - Alberta : National Energy Board Irregular [January 2000]-- Includes an office consolidation of the National Energy Board Pipeline Crossing Regulations. Construction industry gcpds Pipelines gcpds Safety regulations gcpds Travaux d'excavation et de construction à proximité de pipelines (CaOODSP)9.503397 Excavation and construction near pipelines (CaOODSP)9.515836