So which pet store injuries are you discounting to make it sound less dangerous than being a cop? 50 lb bags of food being dropped on you? Animal bites? Maybe pet store employees should just start shooting dogs to lower their injury rate. It seems to work for cops...
He's basically saying:
"by one standard, fatalities, being a miner/roofer/deep sea fisherman is more dangerous than being a pet shop clerk, but by another standard, injuries, being a pet shop clerk is more dangerous than being a miner or deep sea fisherman."
My response has basically been:
"If your metric is telling you that being a pet store clerk is more dangerous than being a miner, your metric is fucking retarded."
I don't know why he keeps insisting on this. It's silliness. EDIT: Not to mention the repeated attempts to use data he doesn't understand, his ignoring the BLS itself not supporting what he said, his ridiculous claims about what other people were arguing, etc, etc. It's flailing.