Happy May Day! Also known as Labor Day in some countries, May 1 marks the Chicago Haymarket protests that took place on that date in 1886, when 35,000 workers walked away from their jobs and demanded standardized eight-hour work days.
A number of processing steps in ceramic manufacturing result in the emission of hazardous air pollutants (HAPs) such as acid gases (e.g., hydrofluoric acid, HF; and hydrochloric acid, HCl) that are released in the high-temperature firing steps of the manufacturing process.
Tungsten mesh has been in use for high-temperature furnace heating since the early 1960s. Tungsten mesh elements came into popularity because they were shown to be more durable than the earlier sheet-style elements.