St-587 Blank Form - Exemption certificate (for manufacturing, production agriculture, and coal and aggregate mining) general. Web you may photocopy this form or you may request additional forms by visiting our web site at tax.illinois.gov, or by calling our 24. Blanket certificate complete this step only if you are using this form as a blanket certificate.
Web you may photocopy this form or you may request additional forms by visiting our web site at tax.illinois.gov, or by calling our 24. Blanket certificate complete this step only if you are using this form as a blanket certificate. Exemption certificate (for manufacturing, production agriculture, and coal and aggregate mining) general.