What position must the block be in when raising the boom?

When raising the boom, the block must be positioned on the ground. This is essential for safe lifting operations as it ensures that the block is properly aligned and ready to receive the load without any risk of swinging or dropping. When the block is on the ground, it also allows for a smooth transition as the boom is raised, preventing any excessive strain on the lifting mechanisms and reducing the potential for accidents or equipment damage.

Having the block in mid-air, at the top of the boom, or connected to the load can introduce complications. For instance, if the block is in mid-air or at the top of the boom, there may be issues with instability or difficulty in controlling the load. If the block is already connected to the load, it can be hazardous to lift without ensuring that the rigging and load are secure, leading to safety risks. Therefore, the correct positioning of the block on the ground is vital for safe and efficient operation during the raising of the boom.