Mineshaft ?
Here's more info I just found on the Class Racer forum. Posted it on the Stocker thread. Thought I'd also post it here.
Under certain conditions, it will be determined that there are "mineshaft" conditions, at a race. When this happens, I assume that the NHRA hp factor police will not use the qualifying times, in order to add hp to the quick cars.
There are several guys here who know all about this. But, here's what is said to be a quote from the rulebook, which describes what constitutes mineshaft conditions.
"To decrease the potential for horsepower/index adjustments when favorable atmospheric (i.e. “mineshaft”) and/or track conditions may have contributed to extraordinary performance the NHRA has developed a system to protect the racers’ horsepower/indexes. If at the conclusion of qualifying the first competitor in the bottom half of the field is -.850 seconds or faster under the class index."
Note: This is just something I found on the Class Racer forum & copied. I can't vouch for how accurate the info is. The complete mineshaft details may include more than is mentioned in this post.
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