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).
Lemon essential oil may be good for colds and congestion Photo Credit lemon image by Aleksei Volkhonsky from Fotolia.com. There are many essential oils that many claim are useful in treating the symptoms of colds and congestion.Use essential oils in a blend, with other essential oils and a carrier oil, in the bath or through inhalation.ine Essential Oil. Pine essential oil is good for relieving congestion and helping to clear the nasal passages. Pine oil is bactericidal, antiseptic and expectorant in its actions. Use pine oil to relieve sore throats and clear catarrh.