Removing Masonry nails

[Dooradley]

Can anyone suggest how I can remove self-driving rivets from a brick wall? I think that's what they're called anyway! I've attached a couple of photos - one where I have tried a hammer and crowbar without much success

 

[alan333]

They might be nails. If they won't pull out then you could try drilling or grinding the heads off.

 

[Dave54]

They look like "Hilti Gun" nails or similar to me. Hard to pull out! I think the last time I had anything to do with any I ground them off as Alan suggests

 

[Dooradley]

I don't have a grinder or similar, so I'll try drilling. There's eight of the damn things each attached with three of the nails!

 

[Dave54]

If they are those, they'll be hard as wotsit. Tough too so they won't snap off. Cheap angle grinder will pay for itself in lessened grief I'd have thought.