Across
- 4. machines that carry concrete
- 6. a type of helicopter that is used to lift heavy objects
- 7. a machine made of two parts
- 8. a type of truck that can carry steel beams and rods
- 9. a type of simple machine
- 11. large power shovels that dig deep holes
- 12. machines that smooth out the roadway
Down
- 1. machines that lay the road surface
- 2. machines that carry dirt away
- 3. large ships that move people
- 5. machines that move other things over water by pulling and pushing
- 7. machines that move dirt around
- 10. machines that are used to dig up dirt and rocks