Stemming Height

A prepared blast site where multiple blast holes have been drilled and stemming plugs placed.

About Stemming Height

Stemming is used in blastholes to improve energy retention and confinement. An important aspect that determines the effectiveness is the stemming height, which can be calculated by using rules-of-thumb or through first selecting the appropriate Scaled Depth of Burial (SD) value. Our stemming height calculator requires an SD input to produce an appropriate value for stemming height.

Don’t know much about SD? Find out more about SD in our detailed article on scaled depth of burial explained and our scale depth of burial calculator.

If you are having problems retaining blast energy or getting adequate confinemnt., have a look at the Varistem Stemming Plugs or contact us.

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