I work at a paper mill in summer an we sweep the machine, steel, and many garages and they are very dusty. should i worry about about inhaling to much?

Use protection!: Don't worry - that will not protect you at all - but do wear a protective mask of some sort. There are a varietry of levels of protection that range from a simple thing like in doctor's waiting rooms to HEPA-approved devices for toxic environments. You'd probably want a mid-range mask. You're right - it can be a hazard, take care and ask your boss for this help (for all workers.) Best wishes!

Well, sure..: It is always important to protect your airways from inhaled particles that could harm you in anyway. if you work around dust and small particles on a daily basis, it is recommended to wear a mask.