What Do The Plastic Stamps on This Plastic Bowl Mean?

I noticed a set of six stamps on the bottom of a plastic bowl. I'm assuming the stamps represent what you can do with the bowl. One stamp looks like a microwave, a dishwasher, a snow flake and a thermometer. There are two stamps that I am having trouble figuring out. Can you help?

This picture sucks but maybe you can help me anyway. What do the last two stamps mean? One looks like a HAZMAT symbol and the other one seems to be a fork maybe? Your thoughts?