Jemena, an Australia-based company that owns and manages energy infrastructure assets, has started construction on the Atlas Gas Pipeline. : Jemena, an Australia-based company that owns and manages energy infrastructure assets, has started construction on the Atlas Gas Pipeline, the company announced Monday. The Atlas Gas Pipeline Project consists of construction of a 60km, 8-in steel-coated buried gas pipeline and compressor station which will connect gas from Senex Energy’s Atlas gas field to the east-coast gas market through the Wallumbilla gas hub.