Portal Photos from Sunday

ARS Mine Surveyor, post: 451158, member: 12913 wrote: I guess I lucked out. The salt mine is room and pillar and my backsights are typically longer than my foresights. My truck in the picture avoids the ladder issue. The roof varries from 12 to 18 feet and we don't have hook type spads. The laser plummet would be handy, but I only use one tripod and hang a 360 prism from the backsight spad then move to the foresight and set the new centerline point.

Pretty nifty truck you got there! I just have a standard pickup (1998 GMC Sierra, bought used from friend)