By Oleg Vukmanovic, Reuters A compressor leak at Angola's new liquefied natural gas (LNGLF) (LNG) export plant has delayed loading programs and reduced output at the $10 billion project, which is due to shut for two months from July, a site manager said. Delays caused by a leaking valve at an air compressor unit has meant that LNG initially due to start being pumped aboard a waiting vessel on Tuesday this week has been pushed back to Monday next week.