The specimen marks a technological turn to manipulating objects with wide, flat stone surfaces ... human groups were using grinding stones to prepare plants and other foods, Shimelmitz says.

The flat surface of the stone shows the kind of wear that would be produced by grinding the broken seeds into flour. The stone came to light in June 1989, and although well enough studied at the ...

Case in point –stone pestle and mortar (rollu in Telugu) sil batta (flat grinder made of stone), chakki or mini jars for pickles and ghee for the dining table. What caught my attention was a ...