here are the pics

the mask
P6050001.JPG

the 17mm fan zip tied to the center of the goggle shelf
P6050002.JPG

wiring back to the switch
P6050003.JPG

wiring from the switch to the battery
P6050004.JPG

the battery on the outside of the mask underneath the goggle strap
P6050005.JPG

Note this type of fan is power biased i.e. if you hook up the power incorrectly you blow the fan motor. At least it was for me, and I had a second fan to work with. Since the fan is a 5v fan I used a resistor inline with the positive lead to drop the 9v to 5v. Hope this helps.