+---------+--------------------+------------------------------+ | | Per Cubic Yard | Per linear Foot of Tunnel | | +---------+----------+-------+----------+-----------+ | | Linear | Pounds | Cubic | No. of | Pounds | | | Feet | of | Yards | Feet | of | | | Drilled | Dynamite | | Drilled | Dynamite | +---------+---------+----------+-------+----------+-----------+ | Heading | 4.5-5.1 | 3.4-5.7 | 7.9 | 35.6-45. | 26.9-45.0 | +---------+---------+----------+-------+----------+-----------+ | Bench | 1.9-2.2 | 1.2-1.7 | 11.1 | 21.1-24. | 13.3-18.9 | +---------+---------+----------+-------+----------+-----------+ | Total | 19 | 56.7-69. | 40.2-63.9 | +------------------------------+-------+----------+-----------+ | Per cubic yard, whole tunnel section | 3.-3.6 | 2.1-3.4 | +--------------------------------------+----------+-----------+ +---------------------------------------------------+------------+ | | Number | | Blasting Notes: | of Sticks | | | | | All holes of whole round are cleaned and loaded | | | before blasting is started | | | | | | First Round: 5-6 lift holes, 7 to 9 sticks each | 35 to 54 | | First row, sub-bench, 6 holes, 6 to 8 | | | sticks each | 36 to 48 | | | | | Second Round: Second row, sub-bench and widening | | | holes, 8 to 10 holes, 6 to 8 sticks each | 48 to 64 | | Stub holes | 10 to 20 | | | | | Bench: Total Sticks | 129 to 186 | | Total Pounds | 107 to 155 | | | | | Third Round: 8 cut holes, 7 sticks each, often | | | requires 3 to 4 charges | 112 to 224 | | Fourth Round: 8 holes, First side round, 5 to 7 | | | sticks each | 40 to 56 | | Fifth Round: 8 holes, Second side round, 5 to 7 | | | sticks each | 40 to 56 | | 2 dry holes 5 to 7 sticks each | 10 to 14 | | Sixth Round: 4 to 6 widening holes and dry holes, | | | 6 sticks each | 36 to 48 | | Stub holes | 20 to 30 | | | |