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.