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
Recent third quarter earnings reports from US refiners have reflected lower refining margins squeezed by higher feedstock prices for inland crudes like West Texas Intermediate (WTI) rising to the same level as coastal crudes like Light Louisiana Sweet (LLS) while product prices stood still.