15.5 Drop raising
15.5.1 Drop raising is a method used to construct vertical excavations on a much smaller scale than is possible through raise drilling.
This is used for ore passes and vertical dams for excavations of small diameter with a maximum length of about 50 metres and an average
diameter of about 1.5 to 2 metres inside the mine. During this process, holes are drilled over the full length of the required excavation
whereafter the holes are charged with explosives from the bottom. The hole is plugged and the explosives are detonated. The blasted
rock falls down into the existing mine shaft and is transported out.
15.5.2 Firms currently engaged in drop raising include Cementation, JIC, Boart Longyear, Master Drilling and various other smaller
players. It appears that M&R is no longer involved in the drop raising market.
15.6 Cementation and underground drilling
15.6.1 The parties submitted that the cementation process was the traditional product offering of the target company, Cementation.
It involves the pumping of cement into mining cavities and fissures and the lining of underground shafts and tunnels with cement.
It is done to limit the ingress of high-pressure water into the mining works. This process also stabilises underground operations
and facilitates the development of underground shafts. Indeed, the parties claim that it is this process that made underground mining
possible in many of those areas in which South Africa’s gold reserves are to be found. According to the Commission, the cementation process includes underground drilling and thereafter the pumping of cement.
15.6.2 M&R RUC is not involved in this activity. Firms which provide this service are Cementation, JIC, Rosond, Boart Longyear
and other small players. It therefore appears that no overlap exists between M&R and Cementation in this sub-market.
15.7 Construction and erection
15.7.1 It is indicated that this service involves minor construction work, which is not associated with major mining projects. It
appears that small civil engineering firms can perform these types of projects.
15.7.2 Both the merging parties as well as Shaft Sinkers, Grinaker LTA, Deilmann Haniel and various other small players are active
in this market.