History of Technology in India, Vol. I: From Antiquity to c. 1200 A.D. v1.c29.s2.t1.4

v1.c29.s2.t1.4

Use of certain pieces of worked stone at Harappan sites suggest as if these were segments of pillars, but it is not clear whether these were employed structurally. However hammer dressed lime stone slabs were occasionally found covering brick drains. Probably such blocks were quarried with copper - bronze chisels and hammers of stone. Transport of such blocks would have required exacting team work.