Uživatel Adelphia Gateway na Twitteru: „Horizontal Directional Drilling (HDD) is on-going at multiple sites. “Pullback” is the last step in #HDD pipeline installation where the prefabricated #pipeline section is pulled through the
HDD and Pipe Ramming Used to Install Water and Wastewater Lines in Wood Buffalo
Comparison of Pipeline Drilling Methods: Bores, HDDs & Direct Pipes [Gaille Energy Blog Issue 75] – GAILLE PLLC