| After oil spills, ND man invents firefighting cannons St. Cloud Times The 2000 model will weigh 28,000 pounds when fully loaded, and the 4000 will tip the scales at 45,000 pounds. Both would have to be mounted on heavy-duty industrial trucks. Graf said it took ... Graf said he wanted to see one Foam Cannon 2000 in every ... |
After oil spills, ND man invents firefighting cannons - St. Cloud Times
