The Scratcher Board Art of Leib Chigrin

From researching Leib Chigrin online it appears he is better known for his pen and ink stipple illustrations than his scratchboard work. While all of his work is worth looking at I was more taken by the scratchboard pieces. Incredibly detailed and precise artworks.
Leib Chigrin is a freelance illustrator from Ukraine.
Links to his online portfolio on Behance and cargo collective.