Sandblaster (building exterior)  involves cleaning, smoothing, roughening, cutting, preparing or removing the surface or part of the surface of any building, ship or article by using sand or other materials containing crystalline silica moved by compressed air bag or steam or a wheel or any other what a way like that.

Chimney Sweeper. They clean, or sweep, the chimneys and make repairs, which may involve masonry work and relining. 

Decontamination Worker remove and dispose of hazardous materials, such as radioactive materials or contaminated soil. They handle hazardous materials in compliance with safety regulations, investigate causes of contamination, and remove the contamination from the structure or site.

Mould Maker mixing modeling materials and melting metal pieces for creating molds. Maintaining and repairing existing tooling and molds. 

Mould Repairer, Foundry make or form wax or sand cores or molds used in the production of metal castings in foundries.

Moulder, Floor, Foundry form sand molds for use in the production of metal castings. This production method, known as sand casting, requires knowledge of the properties of metals and sand mixtures, pattern shapes, and pouring procedures.

Moulder, Metal set up and operate metal casting, molding, and coremaking machines to mold or cast metal parts and products, such as tubes, rods, automobile trim, carburetor housings, and motor parts.

Moulder, Pit Foundry make moulds and cores for casting metal.

Core Checker, Foundry clean and smooth molds, cores, and core boxes, and repair surface imperfections.

Moulder is responsible for creating products chosen from one or several materials.

Foundryman will be able to make mould by hand or machine which is a basic step for making casting metal partsby different moulding process.

Welder assembling pieces of metal together or repairing damage in metal components using heavy machinery that emits high heat, melting the metal into shape.

Flame Cutter weld and cut metal parts using gas flame, electric arc and other sources of heat to melt and cut, or to melt and fuse metal. 

Foreman, Welder responsible for training employees on equipment and machinery and managing the budget for a welding project. 

Plumbum Burner burns together lead and lead-alloy connections and builds up storage-battery parts, using oxyacetylene torch and lead bar.

Gas Tungsten Arc Welder assembles and welds metal parts for use in manufacturing or construction projects. 

Underwater Welder uses many common arc welding processes to weld and cut in a wide range of aquatic environments. 

Brazier operate various equipment and machinery such as torches, soldering irons, fluxes and welding machines in order to join two metal pieces together, by heating, melting and forming a metal filler inbetween them, often brass or copper.

Gas Pipe Welder assembling, installing and repairing pipe components and systems according to specifications. 

Fabricator Welder responsible for joining metal using a variety of techniques, often to form new structures.