Plaque Boys 

Not sure why you're rating all these routes on lower infirmary so poorly. They are super easy to top rope and pretty fun routes. Plague Boys was my first lead on a climb in like 6 years, and while it scared the crap out of me at the time, I still wouldn't rate it higher than a 5.7. The 5.9 route to the left only has one 5.9 move on it (and it probably is harder than 5.9). Still and all, these climbs are fun, although there are better routes up above on the upper infirmary slabs.

MK

5.7 if you climb right of the bolts (where the features are).5.10 if you try to climb up the bolts on the slab.Another 2 Star SSV ultra-sandbag classic slab.

The 5.10 line Paul mentioned is excellent.

Yeow, can't understand all the bombs being thrown at the lower infirmary routes. Absolutely nothing wrong with them - easy to TR, challenging (sandbagged) for the grade.

Did this climb for the second time the other day. I would say this is more of a one move wonder. Going right of the bolts after the .7 crux makes the rest of the climb go at about a 5.5-5.6 going straight up the line felt more along the lines of 10a/b. The finish though is a fun little lieback to the chains. Would definitely recommend doing it the more sporty way as the bolt placement is pretty good.

A decent route; the harder moves are the slabby moves down low.

Major sandbag, more like 5.8c or 5.9 if you ask me.

Top roped this climb going up the slab route between the Plaque Boys bolts and the Mentally Infirm bolts. Stay out of the crack on the right and go straight for the top.