"Dull Chisel" is a modern Old-Time style tune by the late Illinois fiddle player Garry Harrison. (His tune "Red Prairie Dawn" is possibly better known and is widely played by Old-Time players.)
The banjo tablature is by John Letscher. His comment:
Deservedly popular contemporary old time from sorely missed Garry Harrison. Play it just fast enough to enjoy keeping up with it.
It was recorded by Garry Harrison and the Mule Team on Red Prairie Dawn (2000).