BOS 29:2000
25 MPa-80mm interlocking concrete paving blocks
Licence No : SM/09-05
Valid from 17 November 2009
Expires on 16 November 2012
BOS 27:2000
10 MPa concrete masonry units
Licence No : SM/09-06
Valid from 17 November 2009
Expires on 16 November 2012
BOS 27:2000
14 MPa conrete masonry units
Licence No : SM/09-07
Valid from 17 November 2009
Expires on 16 November 2012