J眉rgen Hubert
J眉rgen Hubert  路  3 days ago

Content Warning

One of the massive pumps that kept the Samson Pit in #SanktAndreasberg - once the deepest mine in the world - free of water.

Since learning more about historical #mining , I have come to the conclusion that the typical "old mine" dungeon complex in #DnD and other #ttrpg don't give enough thought on how to keep the water out.

#history #engineering#Harz
Ivor
Ivor  路  5 months ago

Content Warning

I've had an interesting day. First day working in a disused lead mine. Clearing shale off the floor. Few photos because it's an unbelievably filthy, dark, cramped place to work. Hats off to the miners of old who drove this tunnel and hundreds of others with pick and shovel.

I didn't have the right clothing (dressed for the cold outside) so quickly started to sweat buckets. It's best to wear next to nothing as long as its waterproof and can stand getting coated in mud!

#Mining #underground

Inside a mine level, the scene is lit by my helmet lamp. There are dark limestone walls, a floor thick with shale and mud and a roof barrel vaulted with thin, buff colour sandstone. Everything is wet. A man in waterproof overalls, coat, helmet, etc, is posing holding a mattock against the side wall. There are two yellow plastic trugs on the floor and the handles of a wheelbarrow are visible. Everything is also coated with a thin layer of wet shale mud.
Inside a mine level, the scene is lit by my helmet lamp. There are dark limestone walls, a floor thick with shale and mud and a roof barrel vaulted with thin, buff colour sandstone. Everything is wet. A man in waterproof overalls, coat, helmet, etc, is posing holding a mattock against the side wall. There are two yellow plastic trugs on the floor and the handles of a wheelbarrow are visible. Everything is also coated with a thin layer of wet shale mud.
Inside a mine level, the scene is lit by my helmet lamp. There are dark limestone walls, a floor thick with shale and mud and a roof barrel vaulted with thin, buff colour sandstone. Everything is wet. A man in waterproof overalls, coat, helmet, etc, is posing holding a mattock against the side wall. There are two yellow plastic trugs on the floor and the handles of a wheelbarrow are visible. Everything is also coated with a thin layer of wet shale mud.
Spaceflight 馃殌
Spaceflight 馃殌  路  7 months ago

Content Warning

#AstroForge is tracking several candidate asteroids, each of which is about 400 meters 馃搹 across. There is no shortage of potential targets. Scientists estimate that there are about 10 million near-Earth #asteroids 鈽勶笍, perhaps 3 to 5 percent of these are rich in #metals, so there are potentially hundreds of thousands of candidates for #mining. https://arstechnica.com/space/2024/08/against-all-odds-an-asteroid-mining-company-appears-to-be-making-headway/

#AsteroidMining#NEA#SpaceMining

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