Every shot hole shall be tamped full from the explosive to the mouth of the hole, and no coal dust or any material that is inflammable or that may create a spark, whether the same is wet or dry, shall be used for tamping.
225 ILCS 705/20.35
Every shot hole shall be tamped full from the explosive to the mouth of the hole, and no coal dust or any material that is inflammable or that may create a spark, whether the same is wet or dry, shall be used for tamping.
225 ILCS 705/20.35