JT/T 33.14-1993 Technical grade standards for workers in the transportation industry Highway engineering and navigation engineering Demolition workers (English Version)
This standard specifies the levels, knowledge, skills and work examples of blasters. This standard applies to the training, assessment and use of blasters in highway engineering and navigation engineering.
JT/T 33.14-1993 history
1970JT/T 33.14-1993 Technical grade standards for workers in the transportation industry Highway engineering and navigation engineering Demolition workers