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Outdoor & Recreation
Safety and Survival
Dangers With Old Workings From Lifes "Experiences"
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<blockquote data-quote="user 4386" data-source="post: 289715" data-attributes="member: 4386"><p>Volcanic gases cause a lot of deaths (although I doubt that was the cause of what you smelled). For example, I remember when a crater in Cameroun let off a large carbon dioxide belch (it was simply a crater lake, not a volcano normally belching ash and gases). It was expelled with sufficient force from below the floor of the lake to fill the crater and roll down the outside walls of the volcano, and settled on a village in a valley where everyone was asleep - invisible, tasteless, odourless. 950 people never woke again. People hike up to Ruapehu volcano in New Zealand and admire the quiet lake in its crater - few realise that the water has a pH of 1 and would rot the togs off you, or that a layer of molten sulphur liquid underlies its waters <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile :)" loading="lazy" data-shortname=":)" /></p><p></p><p>Back to the topic - old mine workings make great rubbish dumps as councils are desperate for land-fill sites in some areas (eg the old Wonga pit at Stawell). Rotting rubbish produces methane. They might belch occassionally as well, but more often the gas would penetrate long distances through the workings to arewas where there is no rubbish - and where unsuspecting people might enter the workings.</p><p></p><p>When I was a kid I used to collect zeolite crystal specimens from old quarries in the suburbs of Melbourne - no sign of them now (filled with garbage). These sites are huge greenhouse gas emitters, mostly methane. Some enterprising businesses have drilled into them beneath their buildings and run power plants on the methane.</p></blockquote><p></p>
[QUOTE="user 4386, post: 289715, member: 4386"] Volcanic gases cause a lot of deaths (although I doubt that was the cause of what you smelled). For example, I remember when a crater in Cameroun let off a large carbon dioxide belch (it was simply a crater lake, not a volcano normally belching ash and gases). It was expelled with sufficient force from below the floor of the lake to fill the crater and roll down the outside walls of the volcano, and settled on a village in a valley where everyone was asleep - invisible, tasteless, odourless. 950 people never woke again. People hike up to Ruapehu volcano in New Zealand and admire the quiet lake in its crater - few realise that the water has a pH of 1 and would rot the togs off you, or that a layer of molten sulphur liquid underlies its waters :-) Back to the topic - old mine workings make great rubbish dumps as councils are desperate for land-fill sites in some areas (eg the old Wonga pit at Stawell). Rotting rubbish produces methane. They might belch occassionally as well, but more often the gas would penetrate long distances through the workings to arewas where there is no rubbish - and where unsuspecting people might enter the workings. When I was a kid I used to collect zeolite crystal specimens from old quarries in the suburbs of Melbourne - no sign of them now (filled with garbage). These sites are huge greenhouse gas emitters, mostly methane. Some enterprising businesses have drilled into them beneath their buildings and run power plants on the methane. [/QUOTE]
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Outdoor & Recreation
Safety and Survival
Dangers With Old Workings From Lifes "Experiences"
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