By Marc Simonetti and Douglas Upton

The Louisiana Supreme Court concluded that limestone purchased for the dual purpose of absorbing sulfur during the generation of electricity and producing ash for sale to third parties was excluded from the definition of a “sale at retail” by application of the “further processing exclusion” under the Louisiana sales

By Mike Kerman and Andrew Appleby

The Louisiana Court of Appeals held that a paperboard products manufacturer was entitled to refunds of sales tax it paid on purchases of chemicals it used in the manufacturing process under the “further processing” exclusion. The chemicals met the exclusion’s three-part test because they: (1) were identifiable components of