03-14-04. GCHK7F - It's Duck Season....Rabbit!....Duck!....: Trevor hit his head pretty hard on a low limb. Let's put it this way...there is some hair out there somewhere on a tree and Trevor still has little birdies floating around his head.
07-05-04. GCH6C1 - Pentimento #1 -- The Q'emiln Chameleon: A mere 400 feet away from the cache a low limb bridging the path decided to take some skin and hair from the top of Kate's head and left blood running everywhere: down the face, in the eyes, over the glasses, down the shirt, all over the hands and down the arms, and splattered over the shorts.
11-21-04. GCKC9N - Indian Canyon Park Cache: Trevor fell from the top of the cliff to the bottom. Luckily a dried up bush and some barbwire broke his fall. After a year of pain and a few months of physical therapy, his shoulder is better, but not 100%.
07-31-07. GC14J0Q - World Cup: Trevor gets stung by some hornets.
05-23-09. GeoWoodstock VII Roadtrip in Tennessee: Trevor runs into some poison (ivy, oak, sumac?) which leaves his leg turning black for the rest of the trip. Some advanced medicine finally helped reduce the area down to a pinpoint, which would never go away. Eventually a knife disposed of it.
Of course this doesn't count the various falls, trips, smashed fingers, blisters, ant bites, bruises, and mosquitoes.