Scott Goldsmith, professor emeritus of economics at ISER, will host a workshop, open to the public, to explain the revenue-generation model he used in his recent analysis of future revenues under the state's old method of taxing oil production, called ACES, and the new method that went into effect in January, known as SB 21 or MAPA. This will be a technical analysis of the model, and not a general discussion of the two production tax systems.