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 ethanol blending margin is important for several reasons, including the net impact of ethanol on gasoline prices at the pump, compliance costs for the RFS, and the pricing of RINs. The conventional approach to computing the E10 blending margin is to compare wholesale ethanol and CBOB (or RBOB) gasoline prices.