Argillite (metamudstone)
Splitting

Slabs are trucked here from the nearby mine site for splitting.

 

 

 

Rough argillite slabs are trucked from the nearby open cut to this site for splitting (left).

The argillite is remarkable because it can be split very accurately to meet  architectural specifications.

Slabs are trimmed manually using a hammer and chisel. Once the upper split side is clean and flat, the customer's thickness specifications are measured with a tape measure.

Splitting is done manually with a hammer and chisel (below). Slabs produced during this step are about 8-10 feet long and 1.5 to 3 feet wide. The argillite is split by hand using a hammer and chisel.

Argillite slabs being trimmed and cleaned before being split to a customer's specifications.