Fuel oil and related equipment which were often designed for lighter fuels. For comparison, BS 2869 Class G heavy fuel oil behaves in similar fashion, requiring storage at , pumping at around and finalising for burning at around . Most of the facilities which historically burned No. 6 or other residual oils were industrial plants and similar facilities constructed in the early or mid 20th century, or which had switched from coal to oil fuel during the same time period. In either case, residual oil was seen as a good prospect because it was cheap and readily available. Most of these facilities
Interlanguage fossilization particularly regarding achievement motivation, especially considering that fossilization can be considered the most distinctive characteristic of adult SLA. The text of this article is taken with permission from "The Role of Achievement Motivation on the Interlanguage Fossilization of Middle-Aged English-as-a-Second-Language Learners" by Dr. Zoran Vujisić (2007). Interlanguage fossilization Interlanguage fossilization is a phenomenon of second language acquisition (SLA) in which second language learners develop and retain a linguistic system, or interlanguage, that is self-contained and different from both the learner's first language and the target language. This linguistic system has been variously called interlanguage, approximative system, idiosyncratic dialects, or transitional