Manual magnet collection of magnetite from stream channels is time-consuming and inefficient because the magnet picks up significant dirt along with the magnetite, requiring multiple purification cycles of spreading, picking up, and re-cleaning.

Using a shovel to scrape the dark magnetite streak directly from the stream channel is faster than hand-magnet collection, though it collects significant quantities of dirt along with the magnetite.

Material collected from the stream must be completely dry before processing through the magnetic separation system.

A screening step removes large rocks that would plug the magnetic separation system, and a fan blows through to remove grass and other organic fibrous material that fits through the screen but would still clog the system.

Sand bounces off the magnet and spreads over a wide area while iron particles stick and slowly move down, creating separate collection zones by position rather than by continuous separation.

Magnetite (iron oxide Fe3O4) naturally accumulates at the bottom of dry stream channels because it is heavier than other minerals in the area and weathers out of the volcanic rock formations.

The smaller magnet apparatus requires a finer screen than the larger magnet apparatus because the material feeding hole must be smaller, reducing maximum feed rate.

The larger magnet apparatus can process a 5-gallon bucket of material every 8 minutes, while the smaller magnet version processes the same amount in approximately 30 minutes, making the larger magnet significantly faster.

When magnetic material accumulates to the saturation point on the magnet's surface, additional incoming particles slide around and drip off the bottom rather than sticking, creating a natural overflow mechanism that improves separation by confining the iron to a small space and preventing sand contamination.

Pure magnetite produced by this extraction process is sufficiently pure to use directly for thermite reactions without additional refinement.

Approximately 800 pounds of pure magnetite represents the potential to produce roughly half a ton of thermite material.

A stream of magnetic particles flowing past a magnet will not deflect significantly away from the magnet unless the magnet's attractive force is strong enough to pull particles, but if the force is too strong, all particles stick and build up on the magnet rather than separating into distinct collection zones.

The primary magnetic separation mechanism uses a large ball of iron stuck to a neodymium magnet positioned at the bottom of a gravity chute; most sand bounces off the magnet while magnetic particles stick to it and form spires that move down and fall off the bottom.

Running material through the magnetic separator twice achieves approximately 90%+ purity magnetite, with the first pass capturing the vast majority of magnetic material and the second pass producing additional minor amounts suitable for reprocessing.

After approximately one and a half days of work using the optimized magnetic separation apparatus, approximately 800 pounds of pure magnetite can be collected and stored in two 17-gallon containers at approximately 20 pounds per gallon.

When running material multiple times through the magnetic separator, the bucket position must be adjusted to capture only the magnetite output, which results in losing some magnetite over the side but allows it to be recaptured and reprocessed.

The eroding magnet ball in the collection apparatus can be slightly eroded by the continuous impact of falling material, creating an indentation that causes additional magnetite to drip off the bottom.