can someone recommend case/shield for me?

[xxxjdoggxxx]

I am getting my EVO 3d tomorrow and am wondering what the best way to protect my phone would be. I work in a machine shop with dirty air and metal dust all over. As most of my use of my phone happens at work I am wondering if someone could recommend a good case for that type of environment. I currently have a Touch Pro 2 that still functions well but is all beat up from work and I want to try to avoid that with my EVO 3d.