Re: Workstation PC - High dust, High moisture, High chance of getting knocked a littl
panty hose makes a pretty good air filter and it's cheap, comes in different colors.
Desiccant (the crystal looking stuff in small bags you find in some products) will help with the moisture. Are you in the Military? Ask the supply clerk if he can get you a cup or 2. Put it in a bag made out of some of that panty hose. It will change color when it has absorbed moisture and you can dry it back out in a microwave.
As for being banged around, an SSD is your best bet with no moving parts. Get a low profile/lightweight heatsink that bolts to the motherboard.