"Polyphemus" is a 1987 collection of horror shorts by Michael Shea. I guess he's better known for his Nift the Lean books (which I have still to read), but he does a have a fine little batch of other stuff to his credit.
This past October, comedian Patton Oswalt listed a favorite horror story each day of the month. I found out about it from Stevie D. and was pleased to discover he had a love for the real foundational authors of the genre (Machen, Lovecraft, James, etc.) as well as good modern ones. One of the stories he listed was "The Autopsy" by Michael Shea in the above named collection. I found it cheap on Amazon and had it within days.
The story was fun and bloody. It involves aliens, Appalachian mines and lots of gore. It's the higlight of a book of equally fun and bloody delights. It's the sort of stuff you used to be able to find each year in the late and terribly lamented Karl Edward Wagner's Year's Best Horror antholgies or still find in Stephen Jones' Best New Horror antholgies.