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
Glossary > Forex > customer margin. customer margin. A method of creating an assurance on the part of both buyers and sellers of futures contracts that all contract obligations will be fulfilled. Customer margins are established individually based on the amount of risk Exposure and the size of the contract. Browse by Subjects.