Lime is used to balance the pH, to make it more alkaline if it is acidic.

We are speaking about mainly hard silicate rock dust: glacial, volcanic and alluvial deposits of which there are millions of tons of byproduct from the stone and aggregate industry. The fineness of the material is very important. Much of this material is appropriate for remineralization.

We are simply re-creating soils the way the Earth does over millennia during an ice age, through volcanic eruptions and so on. We recognize the need to recycle organic matter. To go beyond organic, we need to recycle the minerals and trace elements as well.