Avoid Wet Conglomerate?

I've drilled a gob of holes in Maple.  The matrix is soft enough in some places to not hold a bolt well (glue in only option) and hard in places where you can smoke a bit.  The cobbles I think are super hard quartzite.  It's a challenge for folks who put in anchors to be sure.

Good times...

Brian in SLC wrote:

I've drilled a gob of holes in Maple.  The matrix is soft enough in some places to not hold a bolt well (glue in only option) and hard in places where you can smoke a bit.  The cobbles I think are super hard quartzite.  It's a challenge for folks who put in anchors to be sure.

Good times...

That's interesting Brian! We also have an enormous range of rock hardness in the conglomerate in Castlewood Canyon. From absolute choss to bullet hard.

Greg D wrote:

Well, since you asked. We just had heavy rain and wet snow for two days. The sandstone in Boulder area today was great. The sandstone around Colorado Springs  not great. But lots of granite nearby that’s a go after rain. 

That's not close. Why shy away from stone that is unaffected by rain for sandstone that is? Your comment doesn't really make any sense. And no one is going to the springs to boulder. If anything clear creek is the obvious answer.