h a l f b a k e r yKeep out of reach of children.
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There was an idea on here a while ago about small-scale
rock-crushing (not beany's) - must have been deleted - the
gist was 'WIBNI there was some low-cost portable
mechanism to crush rocks into gravel'
Recently tried breaking boulders by picking them up and
heaving them at a strong-looking
stone. About a quarter
of them would split open per try. Of course there were a
few tough-nuts-to-crack. Sometimes the anvil-stone would
break instead.
The idea is an inclined conveyor with cleats or buckets for
rocks that carries them to the top (20 feet?) and drops
them onto an anvil. Split chunks will be further crushed by
subsequent rock impacts if the anvil is wide. Screens
would separate chunks from gravel and return chunks to
process.
[link]
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I remember a nature show where the bird takes the bones
from a carcass and drops them onto rocks from way up
high to break them and subsequently drink the nutrient
rich marrow. Maybe we could train birds to break rocks
for us? |
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The monkeys are not dropping things. The escalators are dropping things. However, since you wish to make an issue of it, the monkeys will now take a brief turn at dropping things from a height while the escalators hurl their poo at you. :) |
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No, I don't know what the escalators have been eating. |
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[bigsleep] It's not just you. I don't know *anyone* who would
consider a Christmas sans chocolate-covered rodents the
same as a Christmas with them. |
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What happened? Did we lose the technology of the stamp mill sometime in the last couple of generations? |
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lurch, (at the risk of being serious... 'ATROBS') - there
are plenty of rock crushing mechanisms, but they all
seem to be heavy and expensive. The idea is to
make a small-scale crusher on-the-cheap |
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That's what I meant. I've seen water-powered stamp mills that could be packed on the back of a single donkey - and not be over 5 feet high fully set up. |
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