is directed to the factory
for the extraction of the desired
This method is used in the
U.S. and Canada in areas where the mi-
ning method is impossible due to mountain
and geological conditions. Underground
leaching from deep-lying beds is used to
produce potassium salt in Utah. The extraction
rate of the useful substance by leaching is low
at around just 17 to 20%, while the mining
method provides a rate of 30 to 80%.
propose to separate the paragraph about
when this method is used (e.g. into
a separate circle) from the
description of the method itself.