1. Boreability assessments for the Lesotho Highlands Water Project;Blindheim,1990
2. Progress in the construction of the Transfer Tunnel, Lesotho Highlands Water Project;Boniface,1994
3. Design and construction of the Transfer Tunnel;Boniface,1997
4. 1999 Performance of tunnel boring machines in basalt of the Lesotho formation;Boniface,1999
5. Two tunnel boring machines for Lesotho: a design and case history;Finnsson,1994