Varying laser pulse duration, spot size, optics and beam characteristics Percussion laser drilling produces a high quality hole with minimum residue and consistent edge quality from entry to exit point. The percussion laser drilling evaporates machine substrate laser by laser without noticeable strata or striations.

In Dump trucks, loading is done manually or by loaders and unloading is done by device fitted in truck. Its capacity varies from 50 to 55 tonnes.

The Blasthole drill bit, as it rotates over rock, disintegrates it and cuttings are removed by a stream of compressed air. The blast of compressed air also cools down bit. The Blasthole drill is a self propelled drill.

Dozer is of three types- bulldozer is used to push material in forward direction. Angle Dozer is used to push materials sideways. Tree Dozer or stumper contains a slightly curved blade and it is design for felling trees and for unrooting stumps.

To raise materials like bricks, tiles, cement, etc. to upper floor level. Elevators moving with high speeds are used. They have short chassis and strong dumping bodies. Dumping of material can be in front or at back.

Traveling gantry consists of two parallel frame supporting Steel rails fixed on m. The rails are turned up at ends to prevent carriers from moving beyond limit. Suitable lifting arrangement is provided on carriage.

In Vibratory compactors, vibrating unit maybe out of balance weight type or a pulsating hydraulic type. This type of compactor is most suitable for coarse grained soil.

The tip of drill bit does work of cutting into target material, eir slicing of thin shaving, grinding of small particles or crushing and removing pieces of work. Drill bits are cutting tools used to create cylindrical holes.

Dead weight Roller are usually diesel powered and driven by a seated operator within a cabin. Their weight varying from 1 to 16 tonnes which is distributed to ground through two large diameter rear wheels and a wider but small front Steering wheel.

Spur point bits have a central point and two raised spurs that helps keep bit drilling straight. The bit cuts Timber very fast when used in a power drill and leaves clean sided hole. They are ideal for drilling holes for Dowels as sides of holes are clean and parallel.