Across
- 3. an auxiliary device that works with a computer
- 5. a tool with holes, used to separate big rocks from small rocks
- 8. a very big vehicle that carries heavy things in an open-pit mine
- 9. a vehicle with a long blade, used to make roads flat
- 10. giving electricity to machines and buildings
Down
- 1. a machine that cuts coal or rock from a mine without stopping
- 2. a plastic base used to build simple electrical circuits for tests.
- 4. a large machine with a long arm, used for digging and moving earth
- 6. fixing something that is broken
- 7. a powerful tractor with a big metal plate on the front, used to push earth