Using a primitive sluice to extract heavier particulate matter (presumably mostly iron or some form of iron oxide -- since iron is one of the most common elemen

Using a primitive sluice to extract heavier particulate matter (presumably mostly iron or some form of iron oxide -- since iron is one of the most common elements in the earth's crust) -- is absolutely brilliant! (I suppose if you were a survivalist, and you were "cheating" (not going through all the necessary steps to realize iron without modern tools), you could simply use a portable neodymium magnet to go through large amounts of dirt -- whatever particles stick are "mostly iron" ore -- which can now be processed further, such as being smelted, etc.) Related: How To Make Everything - Smelting Iron from Rocks (Primitive Iron Age Extraction): https://www.youtube.com/watch?v=AUn6LzakHsM https://www.youtube.com/watch?v=AUn6LzakHsM Good and Basic - Smelt Success! (Iron Smelt #8): https://www.youtube.com/watch?v=a6_zVvG4FNo https://www.youtube.com/watch?v=a6_zVvG4FNo