Class 7 Blaster

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​ Now Live for Trades Credentials!


Alert: Beginning January 8, all initial and reinstatement applications for a Trades credential must be made through LicensE, your online, self-guided licensing platform.

​​​​​​​​​Trades Renewal Message​​


Please renew online at https://appswlp.dsps.wi.gov/SB.CredentialRenewal/app/rstCredentialSearch.  If you are not able to renew online, mail your postcard with a check made payable to DSPS at 4822 Madison Yards Way, Madison, WI 53705.

​License Information

Per Wis. Admin. Code § 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 7 Blaster or is under the direct supervision of a person who holds a credential as a licensed Class 7 Blaster is limited to conducting blasting operations and activities for structures greater than 15 feet in height, bridges, towers or any of the objects or purposes specified as follows:

  • Not closer than 500 feet to an inhabited building for stumps, boulders, ice, frost, concrete, footings, foundations, pole settings, drainage ditches, beaver dams, pot holes, seismic tests, boiler tubes, fertilizer piles, silos, dimension stone, well shooting, metal forms, black powder or coal piles.
  • For stumps, boulders, ice, frost, concrete, footings, foundations, pole settings, drainage ditches, beaver dams, pot holes, seismic tests, boiler tubes, fertilizer piles, silos, dimension stone, well shooting, metal forms, black powder or coal piles.
  • For underground mining, underground construction or tunnels.
  • Not closer than 2,500 feet to an inhabited building for quarries, open pits, road cuts, trenches, site excavations, basements, underwater demolition or underground excavations.
  • 2,500 feet and closer to an inhabited building for quarries, open pits and road cuts.
  • 2,500 feet and closer to an inhabited building for trenches, site excavations, basements, underwater demolition, underground excavations or structures 15 feet or less in height.

Application Information

FormDescription
3094Class 7 Blaster License Application Information (includes Form 3094T)​
3198
Trades LicensE Information