00000nam##2200000za#4500 9.652378 CaOODSP 20210615115617 ta 150407|2011||||xxc||||| f|0| 0 eng|d 978-1-100-19244-4 CaOODSP eng n-cn--- NE23-31/2011E Canada. National Energy Board. Excavation and construction near pipelines Calgary - Alberta : National Energy Board c2011. 23p. ; 28 cm. Each excavation or construction activity is unique and this guide cannot deal with all cases. Its purpose is to help you determine whether you must obtain approval, where to obtain it and how to obtain it. Softcover 11-39 2011-09-30 Pipelines gcpds Travaux d'excavation et de construction à proximité de pipelines (CaOODSP)9.685343