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).
Eucalyptus is antiviral, antibacterial and a good decongestant. Use eucalyptus essential oil in steam inhalations to relieve a stuffy nose or a sore throat, in a bath to relieve cold symptoms and in aromatherapy burners as a natural disinfectant during the flu season. Tea Tree Oil for Colds and Flus.