An arc is an electrical phenomenon that occurs when flowing current leaves its intended conductor, traveling through air to another conductor or to ground.
Hydraulic fracturing has been used for hydrocarbon recovery for decades, but has become widespread in North America due to a modern process known as horizontal slick water fracking
In recent years, portable gas detectors have shrunk in size and cost while many new features have been added: automatic time-weighted average (TWA) and short-term exposure limit (STEL) calculations, data logging, man-down alarm, and wireless capabilities to name a few.
Not a single day goes by without media reports warning of increasing CO2 levels, rising temperatures and sea levels resulting from global climate change.
