ABSTRACT
Fagersta cut, a parallel hole cut of cylinder type with one center hole 75 mm in diameter, see Fig. 29. The empty hole is drilled in two steps, the first as an ordinary hole and the second as an enlargement of this pilot hole. The cut consists of two rhombic rows of blastholes with four holes in the first row and six holes in the second row. Langefors, 1963.
