bids are invited for boqauto extension if any seller submits price in last 15 minutes, the rawill be auto extended by 15 minutes ( a maximum of300 times ) total quantity : 1--1.00 (1) construction materials natural sand confirming to is 383-1970 (specifications for coarse and fine aggregates. free from adherent coating, hard, durable, clean and shall not contain clay and impurities such iron pyrites, alkalies, salt, coal, mica, shale or similar laminates or other materials exceeding the specified limits in is code aggregates for concrete. 2.00 (2) construction materials natural sand confirming to is 383-1970 (specifications for coarse and fine aggregates. free from adherent coating, hard, durable, clean and shall not contain clay and impurities such iron pyrites, alkalies, salt, coal, mica, shale or similar laminates or other materials exceeding the specified limits in is code aggregates for concrete. 3.00 (3) construction materials natural sand confirming to is 383-1970 (specifications for coarse and fine aggregates. free from adherent coating, hard, durable, clean and shall not contain clay and impurities such iron pyrites, alkalies, salt, coal, mica, shale or similar laminates or other materials exceeding the specified limits in is code aggregates for concrete. 4.00 (4) construction materials aggregate 20mm. stone aggregate to be crushed rock or gravel 20mm graded confirming to is 383-1970 (second revision) and shall consist or angular fragments and shall be clean, hard, tough, durable and of uniform quality through out 5.00 (5) construction materials aggregate 20mm. stone aggregate to be crushed rock or gravel 20mm graded confirming to is 383-1970 (second revision) and shall consist or angular fragments and shall be clean, hard, tough, durable and of uniform quality through out 6.00 (6) construction materials aggregate 20mm. stone aggregate to be crushed rock or gravel 20mm graded confirming to is 383-1970 (second revision) and shall consist or angular fragments and shall be clean, hard, tough, durable and of uniform quality through out 7.00 (7) construction materials aggregate 40mm. stone aggregate to be crushed rock or gravel 40mm graded confirming to is 383-1970 (second revision) and shall consist or angular fragments and shall be clean, hard, tough, durable and of uniform quality through out 8.00 (8) construction materials aggregate 40mm. stone aggregate to be crushed rock or gravel 40mm graded confirming to is 383-1970 (second revision) and shall consist or angular fragments and shall be clean, hard, tough, durable and of uniform quality through out 9.00 (9) construction materials aggregate 40mm. stone aggregate to be crushed rock or gravel 40mm graded confirming to is 383-1970 (second revision) and shall consist or angular fragments and shall be clean, hard, tough, durable and of uniform quality through out 10.00 (10) construction materials quick setting compound (rapidite) (make acclerex/cico/fosroc 11.00 (11) construction materials quick setting compound (rapidite) (make acclerex/cico/fosroc 12.00 (12) construction materials quick setting compound (rapidite) (make acclerex/cico/fosroc 13.00 (13) construction materials ms binding wire 14.00 (14) construction materials ms binding wire 15.00 (15) construction materials ms binding wire