DSCF0105 [Back] [Index] [Next] All images Copyright of Peter Jordan - PJ's Castlebar Photo Archive Created 22 June 2004 23:41:35 - Go to Castlebar

Access tunnells some 4' high were enlarged using explosives and 3 minute fuses. The settlement factor was 60% so for a 6 ft high tunnel you had to blast about 10 feet high of rock which would then 'settle down'

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