supply of material under the work of sr to providing and fixing ms gate and conserve the bastion at the entrance of tomb of adam khan, new delhi , conservation work , unslaked lime ( in proper air tight bags ) . , surkhi ( made of 1st class bricks and free from clay / silt / organic matters / foreign matters ) , coarse sand ( free from clay / silt / organic matters / foreign matters ) , belgiri ( in dried form and airtight packings ) , gur ( desi ) , gum ( babool ) , san , dq stone ( ( nominal size as per site requirement or as per site incharge ) , 10cm thick hard stone , brick aggregate 20mm nominal size ( free from clay / silt / organic matters / foreign matters and well graded )