He pointed out that two of the
boreholes are located at Sabo Market, Ibadan, while Omi Adio Market, Apata, Ibadan, Obanisunwa Market, Ayete, Aaraada Market, Ogbomoso, Odo-Oba Market, Odo-Oba, Ogo-Oluwa, Oja Agbe Market, Iseyin, Olorunda Market, Iganna and Owode Market, Igboho have one each.
Caption: Yahaya Namangaya, Ndomoni village chairperson, pumpswater for resident George Magomo, while members of village council discuss the
borehole project with PWRDF staff member Zaida Bastos (middle).
This method can greatly reduce the amount of air overpressure (200% to 400% from a normal
borehole charge), minimize flyrock, and break the boulder into four or more pieces.
If we want to put waste where we'll never see it again," he added, it should go at the bottom of a deep
borehole.
Casing was used in overburden to prevent the
borehole caving and water was used as a drilling fluid.
Finally, the methodology is used to study optimum
borehole spacing to minimize total bore field length for a particular case.
The g-functions for this single
borehole case are determined with the method described by Claesson and Javed (2011).
Mr Warburton said: "Ideally we would like energy companies in the bidding process to involve the
borehole in their schemes.
The blasting company witness also said that the area at the base of the highwall, below the loaded
boreholes, was clean on the previous day, so it was his belief that the loader would not be mucking at the face in front of the loaded
boreholes.
The team then aimed to make two parallel
boreholes, intended to join 300m below the surface.
The Company is in the process of drilling at least a further 6
boreholes to finalise the present drilling program.
During a site inspection on 27 March, the first
borehole was approved for the first group of farmers to use.
