Muddy Slate Lances

I'm wet grinding slate right now.  I need some slate lances and ulus for an order heading to Newfoundland's Northern Peninsula.  The two pieces above are half-formed Maritime Archaic reproductions.  One is a flat slat lance (left) and the other is a bayonet (right).  The original tools would have been hafted onto long wood shafts and probably served similar functions to pierce thick layers of marine mammal blubber.  The bayonet is distinguished by it's triangular cross-section.

Photo Credit: Tim Rast