1. Overhead cranes are usually attached to support platforms or the walls of buildings.

2. On overhead cranes, the hoist cable and hook move along a track that is called a "boom".

3. If they're not using wireless devices, workers are required to communicate using standard hand signals during crane operations.

4. All "signal persons" who work with cranes must be licensed by an accredited government agency.

5. You can't determine anything important about the condition of a crane just by listening to it.

6. The total weight of a crane's load should always include the weight of the rigging, block and hook.

7. A copy of a boom crane's load chart will usually be attached permanently to the equipment.

8. You should position a sling on the tip of the crane's hook because that is where the hook is strongest.

9. After landing a load, you should remove the slings from both the load AND the hook.

10. On a busy or crowded worksite, coworkers can walk underneath a raised load as long as they are wearing a hardhat.