“The methane injection still needs a bit of fine tuning”

— Art Bjornestad, via Facebook

The monthly Mystery Photo has been an SCM tradition for 25 years. Each week, we’ll share one of our “greatest hits” photos from the past and give you a chance to provide a new witty and provocative caption. Each week’s winner will be announced in the Newsletter. Share your caption for this week’s photo in the comments below. Subscribe to SCM and enjoy a brand new Mystery Photo contest each month.

 

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