In reply to Chris Harris: 3 bolts in 28m?!
There are lots of slate routes with bolts in that get E grades. E grades used to be for both sport and trad routes, as we didn't use F grades in the UK back when bolts came in.
Lots of the slate routes are kind of in between - like this one. It's very safe, the hard sections are protected by bolts. However it's not quite a sport route.
I think it goes like this (from memory - this could be wrong and the heights are approximate)
5m Wire
8m Wire
10m 1st bolt
(crux)
14m 2nd bolt
15m Cam
18m Wire
20m 3rd Bolt
28m Top
Jack