Which term describes the reduction of newly mined ore to a manageable size?

Which term describes the reduction of newly mined ore to a manageable size?

• A. Primary deposit
• B. Primary crushing
• C. Proportions
• D. Recovery

Answer: (B)

The main idea is the initial size-reduction step in ore processing. This first stage is known as primary crushing, where large, freshly mined ore is reduced to pieces that are small enough to handle, transport, and feed into the next processing steps. Primary crushing uses equipment like jaw crushers or gyratory crushers to take big chunks from the mine and break them down into more workable sizes. After this, secondary and possibly tertiary crushing can further refine the size, but the term described here specifically refers to that initial reduction. The other terms don’t fit: primary deposit relates to where the ore is located, proportions refer to ratios, and recovery concerns how much valuable material is extracted rather than how the material is sized.

The main idea is the initial size-reduction step in ore processing. This first stage is known as primary crushing, where large, freshly mined ore is reduced to pieces that are small enough to handle, transport, and feed into the next processing steps. Primary crushing uses equipment like jaw crushers or gyratory crushers to take big chunks from the mine and break them down into more workable sizes. After this, secondary and possibly tertiary crushing can further refine the size, but the term described here specifically refers to that initial reduction. The other terms don’t fit: primary deposit relates to where the ore is located, proportions refer to ratios, and recovery concerns how much valuable material is extracted rather than how the material is sized.