Which factor is NOT typically associated with increasing the likelihood of flyrock?

Which factor is NOT typically associated with increasing the likelihood of flyrock?

• A. Abnormal rock conditions
• B. Accurate drilling
• C. Excessive explosive employed
• D. Improper hole sequence

Answer: (B)

Accurate drilling is essential in the mining process as it ensures that the explosives are placed precisely at the intended depth and locations, which helps in achieving an even distribution of energy when the blast occurs. This precision plays a crucial role in controlling the amount of flyrock produced during the blasting operation. In contrast, factors such as abnormal rock conditions, excessive explosives, and improper hole sequence can significantly increase the chances of flyrock. Abnormal rock conditions can lead to unexpected behaviors during a blast, while using excessive explosives can generate more energy than needed, propelling rock fragments further. An improper hole sequence can also disrupt the intended dynamics of the blast, contributing to unsafe rock displacement. Thus, accurate drilling stands out as the factor that does not increase the likelihood of flyrock.

Accurate drilling is essential in the mining process as it ensures that the explosives are placed precisely at the intended depth and locations, which helps in achieving an even distribution of energy when the blast occurs. This precision plays a crucial role in controlling the amount of flyrock produced during the blasting operation.

In contrast, factors such as abnormal rock conditions, excessive explosives, and improper hole sequence can significantly increase the chances of flyrock. Abnormal rock conditions can lead to unexpected behaviors during a blast, while using excessive explosives can generate more energy than needed, propelling rock fragments further. An improper hole sequence can also disrupt the intended dynamics of the blast, contributing to unsafe rock displacement. Thus, accurate drilling stands out as the factor that does not increase the likelihood of flyrock.