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).
About Common Colds. Common colds, or simply colds, are usually quite harmless and go away again on their own. Although they are different to the flu, having the symptoms of a cold-like a cough, sore throat and runny nose-can be bothersome.A severe cold can make you feel weak and ill too.Most colds are caused by viruses. Antibiotics are not effective against colds because they only fight bacteria.lthough they are different to the flu, having the symptoms of a cold-like a cough, sore throat and runny nose-can be bothersome. A severe cold can make you feel weak and ill too. Most colds are caused by viruses. Antibiotics are not effective against colds because they only fight bacteria.