Sentence:  When our artist and I were dropped down our first coal-mine, we felt a "leetle" bit anxious. It was something "new". But we have been <WSD>avalanched</WSD> down the incline from Peak Forest, and boomeranged round the sudden curve at Rowsley, and have run the gauntlet at Penistone and King's Cross without ever taking the precaution to say “God help us.” 
Meaning of the word marked with <WSD> tags:  To propel downward like an avalanche.