['Specialized Industries']

['Mining']

07/19/2025

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§56.6902 Excessive temperatures.

...

§56.6902 Excessive temperatures.

RegSense CFR Regulations Mining Specialized Industries CFR Section English Focus Area USA

(a) Where heat could cause premature detonation, explosive material shall not be loaded into hot areas, such as kilns or sprung holes.

(b) When blasting sulfide ores where hot holes occur that may react with explosive material in blastholes, operators shall—

(1) Measure an appropriate number of blasthole temperatures in order to assess the specific mine conditions prior to the introduction of explosive material;

(2) Limit the time between the completion of loading and the initiation of the blast to no more than 12 hours; and

(3) Take other special precautions to address the specific conditions at the mine to prevent premature detonation.

['Specialized Industries']

['Mining']

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