The use of bone char to filter cane sugar is interesting -- but something that I'm finding puzzling is that the above linked article specifically says that the bone char was used for sugar beet processing, but many other online sources consistently state that bone char is never used for sugar beet processing, only sugar cane processing. Did it used to be used for sugar beet processing but techniques changed?
Based on some reading, beet sugar refining is easier because of less impurities than cane sugar. So the modern technique for producing white beet sugar is to use vacuum evaporation to crystalize out the sugar out of beet juice leaving the impurities behind. Maybe before vacuum evaporation was invented beet sugar had to be undergo chemical processing similar to cane sugar to remove the impurities?
The deeper you plough this field, the more fruitful the findings.
No dead end in sight.
This may even take the cake.
Dark and heavy Belgian cake.
Cake of the dead, so to speak.
Can't tell if this is sarcastic or not but an entertaining example of everyone going straight to the comments (myself included). (for those who didn't see this is link is the same as the main post these comments are under).
I just remembered that the first time I read about this, I rummaged around for source material.
There is a book from 1840 in which the processing of human bones from battlefields is described as productive and profitable.
Carl T. von Natorp, "Ueber den Gebrauch und Werth der Knochendüngung", 1840
"On the use and value of bone fertilization"
There is a bad scan by google books of parts of the text written in German Fraktur, but on page 410 he's clearly talking about the English that started to collect bones from the battlefields to use as fertilizer in 1822.
... in the modern era. It's a given that fabric and metals are high cost of production from raw inputs, and pre-mechanisation would be far too valuable to just leave in the fields. Post mechanisation the problem is logistics. (The factory war era pretty much begins with the Napoleonic war: Marc Brunel (Isembards father) made boot making machines and block making machines for the british war supply chain. You can see the blockworks in Portsmouth harbour and bits of the machines are in the science museum, London)
I think "battlefield pick-over" is not a busted trope. Logistics means you use the stuff to hand, be it 155mm shells you captured taking a Russian trench system, or arrows left over from a stupid french knight charge over muddy ground towards english archers.
The point here, is that a vaguely disgusting re-use of the consequences of war, is that dead bodies turn out to be valuable, not just the grave goods around them. You want phosphates for fertilizer enough that digging up bones to burn to make it, is worthwhile. You would think that the slaughter of cattle and sheep provided enough but a few thousand buried soldiers is a pretty good deposit.
In times past soldiers piss has been used to make gunpowder, dung was used in leathermaking. What's the difference here to using urine, and digging up dead mans bones?
I remember hearing that there were so many mummies around from Egypt that they were used as fuel in some cases... Humans never have valued far enough removed dead...
And surely yes, if I were local peasant near battlefield I would go and pick through it after everyone is gone. Or at latest when most of the stink is gone... Metals at least had value.
“It was claimed by author Mark Twain that mummies had been used as fuel for locomotives. In his 1869 travel book called The Innocents Abroad, Twain describes the first railroad in Egypt. Because of the lack of trees and the price of coal, Twain claims that the Egyptians used mummies instead. He wrote, “[The fuel used] for the locomotive is composed of mummies three thousand years old, purchased by the ton or by the graveyard for that purpose.””
Also, FTA: “we know the British imported mummies and bones from Egypt on an industrial scale”
If you're seriously asking, I highly doubt so. Great Britain has massive deposits of relatively clean, accessible coal. They are mostly in Wales but also in England and Scotland. Therefore there would be little reason to import any fuel from Egypt; over that distance, the steam ship would probably consume as many mummies as it was carrying.
It goes further than that. If you find someone who's almost dead but not quite, you can steal that person's organs, netting you way more than metals, weapons, or anything else you're likely to find on a battlefield.
"vaguely disgusting" has another dimension in the modern era. I read once that by contemporary standards human bodies are essentially hazardous waste and every graveyard is essentially a superfund site.
Embalming is very rare in places like continental Europe, and large swathes of the non-western world has religious bans on embalming, so formaldehyde in graveyards is almost purely a problem in the anglosphere.
This is very cool actually! Human bodies take so many resources from the Earth to grow, the very least we can do is recycle what's left when we die. Body composting ("green burial") is an increasingly popular option today, but I wouldn't mind if my bones were used in manufacturing either. (Actually my biggest objection would be who's profiting off my bones. I've spent almost my whole life so far enriching billionaires, and it would be cool if that could end at my death.)
I think what's most surprising to me is that I didn't realize battlefield mass graves were actually so common in the past. At this scale it makes sense, but I had an idea from antiquity studies that war dead were expected to be brought home for burial. (That could also be untrue of antiquity tbh; burial was always an incidental topic.)
Maybe part of the explanation is that there weren't as many soldiers in these battles as historical accounts say. We're well aware that official Roman numbers of the sizes of armies were hugely bloated compared to reality. The same might well be true of later battles.
I couldn’t find the right combination of search terms to provide a citation, but I’ve heard stories of plane crashes where locals took the flight data recorder or other critical pieces of evidence from the scene before officials arrived. Rewards had to be announced and paid out to get people to bring back parts so that investigations could proceed.
I don't have a link, but a similar story happened on top of a mesa near Moab, Utah, in the 1970s. Local climbers already knew routes to the top and hiked out with whatever they could carry before the feds could fully clear it.
[1] https://dwarffortresswiki.org/index.php/Goblinite