best methods to remove drilled angles/ larger star drives no power tools allowed

I am doing a bunch of anchor replacement in Zion. A lot of the Angles got to got they are old, wiggling and have fractured rock. some might even pull under body weight. some are awful bastards. Any ideas? once funking is out of the picture, what do you do? Do I need a blow torch for glued angles? Should i just chop new holes. and drill? Any tricks for 1/2in star drives?

Thanks

For the 1/2" Star Drivyns you need to make a 3/8" tuning fork as the nail is 3/8" in diameter. Use the fork to pull the nail. Then use a crowbar (24" bar works well) to remove the sleeves. If you are lucky you will get the lead out as well. If not, get a 1/2"x4" lag bolt. Screw that into the hole until it bottoms out. The use your crowbar to pull the bolt. The lead should come with the bolt.

Having said that, are you sure the Star Dryvins are 1/2"? I have seen a heck of a lot of 3/8" Star Dryvins. The procedure for removing 3/8" Star Dryvins is the same as for 1/2" except that you need a 1/4" tuning fork for the nail and a 3/8" lag bolt for the lead.

unless you are super good with a torch, you are going to spall out the rock around the piece with a torch. At the very least there will be smoke/slag staining on the rock.

most star drives i have found are 3/8's, i have run a couple 1/2's pretty rare. I am all ready rolling with the tuning fork crowbar gang and its doing good. I usually fish out the lead with needle nose and reuse the hole. just wondering about any tricks that i might not be privy to that would make life better and be less damaging.

For the pins i doubt i can re use the hole so I might just chop them with a hack saw and patch with quiksteel.

If you interested i am doing all of this with the FA' approval as much as possible, using 1/2x5in wave bolts with powers glue and chain or something in the same vein.

if any one has any other useful tid bits as i my self am pretty good at putting bolts in, but getting them out is a different animal. any advice is heeded and appreciated. Got big plans for the trade routes. no one will ever have to go off the beaten path again.