4 ms·

TIL there's a mine within San Francisco city limits! https://mines.fyi/mine/0405261 https://mines.fyi/mine/0405261 (I guess technically a "surface mine" for "C

by simonw 9mo ago

TIL there's a mine within San Francisco city limits! https://mines.fyi/mine/0405261 https://mines.fyi/mine/0405261 (I guess technically a "surface mine" for "Construction Sand and Gravel".)

maxbond 9mo ago
Once you learn how to spot these you'll see them everywhere on road trips and such.
- greggsy 9mo ago
  I see quarries everywhere, and they’re kind of required near any city or road project around Australia. Never considered them as a mine though… more like a ‘general resource site’?
  - deleted 9mo ago
    [deleted]
dboreham 9mo ago
The data set includes gravel pits. You can filter them out by selecting "Underground" for "Type".
- defrost 9mo ago
  Wouldn't that also filter out every open cut surface mine that strips overburden and directly extracts near surface coal, copper deposits, iron ore, etc. Not every mine is a "classic" underground mine with tunnels, etc. See (for example) the W.Australian SuperPit gold mine which consolidated every shaft mine in a particular region into a single open pit that goes deeper than any pre existing underground mine in that area.