2023 Washington Code 82.08.02568 – Exemptions — Sales of carbon and similar substances that become an ingredient or component of anodes or cathodes used in producing aluminum for sale

2022 Washington Code 82.08.02568 – Exemptions–Sales of carbon and similar substances that become an ingredient or component of anodes or cathodes used in producing aluminum for sale

2020 Washington Code 82.08.02568 – Exemptions — Sales of carbon and similar substances that become an ingredient or component of anodes or cathodes used in producing aluminum for sale

2019 Washington Code 82.08.02568

2018 Washington Code 82.08.02568 – Exemptions — Sales of carbon and similar substances that become an ingredient or component of anodes or cathodes used in producing aluminum for sale

2016 Washington Code 82.08.02568 – Exemptions–Sales of carbon and similar substances that become an ingredient or component of anodes or cathodes used in producing aluminum for sale

2015 Washington Code 82.08.02568 – Exemptions–Sales of carbon and similar substances that become an ingredient or component of anodes or cathodes used in producing aluminum for sale

2014 Washington Code 82.08.02568 – Exemptions — Sales of carbon and similar substances that become an ingredient or component of anodes or cathodes used in producing aluminum for sale

2013 Washington Code 82.08.02568 – Exemptions — Sales of carbon and similar substances that become an ingredient or component of anodes or cathodes used in producing aluminum for sale

2009 Washington Code 82.08.02568 – Exemptions — Sales of carbon and similar substances that become an ingredient or component of anodes or cathodes used in producing aluminum for sale