Most drills have a day and a night crews so they turn 24hrs per day with an overlapping crew change at 7. New guys go out and take over and the shift that was on comes back in. The drill only stops for 10-20 minutes during the actual change.

It takes the better part of a shift to move, set up on a holes and case the hole. On a project like this the crews are paid an hourly rate plus shift bonuses on drilling production so they will typically drill as fast as they can. So take a baseproduction of 10 meters for the set-up shift and 70 meters for every shift there after. To average 140 meters per day would been seen by drillers as pretty easy drilling. Easy drilling equals more meters of output and faster results for the geolodgists and us. Once the crew gets experience with the rock, picking the right drill bits for rock hardness, working with the geologists etc things tend to speed up a little bit more.

Assuming NOT is following the above pattern we should see 2 to 3 holes per week per drill depending on hole depth, length of move etc.

Hope this helps.

... Been There