I often see a month's worth of drilling taking 2-6 weeks or more for returns on lab analysis, depending on how busy the lab may be - usually around 4 weeks in normal times.  I suspect labs are not busy now, though holidays add another factor.  Having said that, I have no idea as to whether or not track-mounted drills are more or less efficient in terms of timing.  LBSR is using track-mounted drills.