As a Steelworker you are required to operate sheet-metal tools and to apply basic sheet-metal layout techniques. In many Naval Construction Force (NCF) projects, sheet metal is used to protect the exterior of buildings by using flashing, gutters, and at times, complete sheet-metal roofing systems.
Other essential oils have anti-microbial actions, protect against colds and are highly effective for respiratory support, whose essences can be inhaled to address ear, nose, throat and lung problems. These include: 1  Frankincense (Boswella carteri). 2  Lavender (Lavandula augustifolia). 3  Lemon (Citrus limonom).
Essential oils for a sore throat. The first signs of a cold can often be a sore throat, and gargling with hot water and a pinch of salt has traditionally been the remedy. For a powerful bug-busting gargle, add 1 drop of tea tree and 1 drop of ravensara essential oils to your glass of warm salt-water mix.Stir the mixture vigorously to break up the droplets of essential oil, take a small mouthful of the mixture and gargle for about thirty seconds, then spit it out.or a powerful bug-busting gargle, add 1 drop of tea tree and 1 drop of ravensara essential oils to your glass of warm salt-water mix. Stir the mixture vigorously to break up the droplets of essential oil, take a small mouthful of the mixture and gargle for about thirty seconds, then spit it out.