License Information

Per Wis. Admin. Cod​e § SPS 305.20, no​ person may prepare explosive charges or conduct blasting operations unless the person holds a credential as a licensed Class 1 Blaster, licensed Class 2 Blaster, licensed Class 3 Blaster, licensed Class 4 Blaster, licensed Class 5 Blaster, licensed Class 6 Blaster, or licensed Class 7 Blaster or is under the direct supervision of a person who holds a credential as a licensed Blaster in one or more of the categories.

A person who holds a credential as a licensed Class 3 Blaster or is under the direct supervision of a person who holds a credential as a licensed Class 3 Blaster is limited to conducting blasting operations and activities for underground mining, underground construction or tunnels.

Application for Licensure

Reinstate a Class 3 Blaster License that has been Expired more than 4 Years

Submit an application, supporting documentation and fee:

• Application for Class 3 Blaster License (Form 3090)
• $78.00 total fee ($15.00 application fee, $30.00 exam fee, $8.00 CIB fee, and $25.00 late renewal fee)

Renewal Information

Requirements

• FEE (See Renewal Dates and Fees)

• Receive a passing score of 70% or greater on take home exam (sent by Department with renewal application).

Renewal Method

A renewal application and exam will be mailed by the Department at least 30 calendar days prior to the expiration of the credential.

• Mail Renewal Reminder/Application to: 

Department of Safety and Professional Services

Trades Credentialing Unit
PO Box 78780
Milwaukee, WI  53293-0780

If you have questions regarding your renewal, please email DSPSCredTrades@wisconsin.gov.

When mailing your renewal, please allow up to 21 calendar days [per Wis. Admin. C​ode § SPS 305.04(1)] from the date your payment is processed to receive an update regarding your renewal.