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A man sits at the machine and inserts a key to operate it.
We see conveyor belts and coal being moved. The operater at the machinery makes a phonecall and we see close ups of machinery at work.
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Midlands News Item No: 5488
In the 1960s the Automatic Control and Monitoring System was introduced to the mining industry. It was operated by a control pannel at the 'main gate' of the machinery. It was sometimes referred to as the ROLF system.