Just like the advanced warning system on Lost in Space, whenever Will was in trouble "WARNING WARNING WILL ROBINSON" mines must have warning systems.
This is an article about a system gone wrong and more importantly about a system that doesn't seem that hi-tec or infallable:
However, several business owners in a commercial strip mall about a kilometre downhill from the gravel pit said Mid-Island Aggregates makes a habit of warning them when blasting is scheduled, but issued no such advisory this week.“Normally they’ll phone us the day before to tell us they’ll be blasting, but this time they didn’t, which is unusual,” said Doug Nestor, who owns a Nutri-Lawn franchise in the mall. Steve Cross, owner of South Shawnigan Auto & Marine a few doors away, said previous blasting in the gravel pit has been preceded by, and followed by, a warning signal he described as “three loud beeps,” something that did not occur on Tuesday.
http://www.theglobeandmail.com/news/national/british-columbia/no-warning-signal-heard-before-shawnigan-lake-gravel-pit-blast/article2174216/
Well no wonder Highlands has been burning and blasting the housing stock in Melancthon, that many less people to put on their speed dial to "warn" them eight times a day, seven days a week (NOT stat holidays) between the hours of 10 and 3 about an impending blast.
Wonder who calls when something goes wrong?
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