Google, would be the best because of all of the different site, hope this helps!
: )
The answer is compact disc or cd, only device that use lasers (that arent proprietary floppys)
Answer:
Sheave wheel and hoist cable
Explanation:
The sheave wheel is a pulley wheel that sits above the mine shaft. The hoist cable passes over the sheave wheel and then down the shaft of the mine. The sheave wheel reduces the sliding friction of the mine cable. The head frame is the structure that supports the sheave wheel.
