2.
OPERATIONAL SEQUENCE
1.
Drilling
The first step is to drill holes of the proper diameter to accommodate the selected
SP-series cylinder diameter. In a large excavation where noise levels under 95 dB are
acceptable, and where there is adequate room for a crawler mounted top hammer this
would be the drill of choice, although a crawler mounted DTH drill would also be
acceptable. The other choice would be a Coring Diamond Drill on Excavator
especially where noise, dust and vibration are restricted.
The PCD-200 series Diamond Core Drill can be attached to an excavator if there is
no available crawler mounted drill or crawler mounted DTH drill
<Fig 3-1> PCD-200 & Core Drill Bits
An excavator can also be used to mount a small DTH drill if a crawler mounted unit is
not available.
<Fig3-2> Low Noise PHD-30
