The beginning of the amazing events at Krakatoa in 1883 date to May 20 when there were initial rumblings and venting from the volcano, which had been dormant for about 200 years.
A refinery margin is the revenue associated with refining petroleum, expressed as a value per volume (e.g. $/L), net of the cost of the crude oil input. The simplest refining
Basics. Gross margin is a simple financial ratio that shows how much of your periodic revenue is left after you subtract costs of goods sold, or COGS. On a monthly revenue of $40,000 and COGS of $25,000, your gross margin is the $15,000 gross profit divided by the $40,000 revenue.This equals 0.375, or 37.5 percent.HARE SHARE TWEET EMAIL. While effective gross margin is important to bottom line profit, a good gross margin is relative to your expectations. For example, 30 percent may be a good margin in one industry and for one company, but not for another.