Thankyou for bringing this topic up. This technology is not one I have kept abreast of so I haven’t any more information to share beyond what is in the source you pointed to. I can tell you that it is an effective way to restore damaged soils and improve those that are still productive. The richest agricultural soils here in the Midwest have developed in late Pleistocene loess which is essentially freshly ground rock dust. Mostly comprised of silt and very fine sand grains which are just the right size to break down fairly quickly, releasing nutrient ions as they do. They also contain a good deal of ground limestone which keeps pH in the optimal neutral to moderate base range. The pre-agricultural vegetation here was prairie grass (steppe) which constantly recycles nutrient ions within the topsoil thus preventing them from leaching out. Proper cultivation and crop rotation has maintained much of that original character since the prairies were plowed.
Similar combinations of glacial deposits and steppe grasslands in areas with cold winters have likewise produced the finest soils of Europe, Eurasia and Asia. Of interest, many soils developed in alluvial deposits of floodplains in arid regions have elevated portions of “fresh” unweathered mineral grains which is why they need only to be irrigated to produce high crop yields. Volcanic ash is another natural source of mmineral nutrients.
Of course, all the soils I’ve discussed above are developed in unconsolidated parent materials a meter or more in thickness. Such thicknesses of patent material are lacking over much of, probably most of, the northern hemisphere’s tundra and boreal forests. Remineralization technology still require a tillable soil medium. Let’s hope that global temperatures do not rise to the point where currently arable lands must be abandoned,because adapting arctic and subarctic landscapes will be difficult and energy intensive.
