Furnace and forge of smiths

From: kalyan97
Message: 11825
Date: 2001-12-16

How did the inscribers of the 4th/3rd millennium BCE in Bha_rata
represent the furnace and forge of smiths?

By using rebus glyphs for the following lexemes:
kut.hi and bat.hi

The glyphs and lexemes are at:
http://www.hindunet.org/saraswati/munda/furnace1.pdf