据美刊《斯基令矿业评论》一九七五年第32期报导:利比里亚邦格矿业公司将建造第二座链篦机-回转窑球团厂。新厂将于一九七七年中期建成投产,设计能力240万吨/年,这将使邦格球团厂总生产能力翻了一番,达到480万吨/年。该公司第一座链篦机-回转窑球团厂于一九七一年二月 According to the U.S. publication Skjeln Mining Review No. 32 of 1975, Liberia Bongar Mining Company will build a second grate-rotary kiln pellet plant. The new plant will be completed and put into operation in mid-1977 with a designed capacity of 2.4 million tons / year, which will double the total capacity of the Bongo Pelletizing Plant to 4.8 million tons / year. The company’s first grate-rotary kiln pellet plant was opened in February 1971