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).
Important Herbs for Cold Echinacea Echinacea is believed to reduce the symptoms of Cold and Flu and helps in the recovery. There are three main species of echinacea: Echinacea purpurea, Echinacea angustifolia, and Echinacea pallida. E. purpurea is the most widely used.