can I use a 6-50 - 10-30 wired cord like this:?

[carybrief]

http://s210.photobucket.com/user/EdConley/media/Plugs/10-30to6-50.jpg.html

i just recently purchase my first Miller, a 211 - mostly will use it on 110 but when I need more power can i use the above config for a power source from my Dryer outlet (or when I do repairs for others?) Just want...