For example:

• the manufacturing process
• structural componentry
• engineering methods
• design

Lenny Stevenson's background includes:

• maintaining conveyor’s lines
• rebuilding industrial gearbox's
• boiler equipment maintenance such as steam lines, relief valves
• industrial separators such as vibra screens
• industrial storage silo sulphur processing equipment such as priller separators, pastellation units, crushing equipment, air compressors.

On much of the listed equipment he has done welding of all aspects including:

• mig
• tig
• stick welding
• brazing of copper, brass, etc,
• machining of metals for equipment parts.

Places of work include:

• Royal Brisbane Hospital
• Golden Circle Cannery
• Boral Plasterboard
• Arnotts Biscuits
• Devco
• Australia Colonial Mutual
• high rise building maintenance (Victoria)
• Bougainville Copper Mine