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
The term margin, when used in accounting and financial reporting, refers to any of three profit lines on the income statement. A margin, specifically, is a profit figure expressed as a percentage of the company's net sales revenues.