Much of the current focus is on energetically efficient and environmentally sound recovery processes as well as issues around the handling and transportation of elemental sulfur.ASRL is supported and governed by a broad cross-section of the petroleum-based energy industry and specific sulfur production and supply businesses from Canada, The United States and much of Europe as well as The Middle and Far East.
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While the phrase "pre-Columbian era" literally refers only to the time preceding Christopher Columbus's voyages of 1492, in practice the phrase usually is used to denote the entire history of indigenous Americas cultures until those cultures were vanquished, diminished, or extensively altered by Europeans, even if this happened decades or centuries after Columbus's first landing.
For this reason the alternative terms of Precontact Americas, Pre-Colonial Americas or Prehistoric Americas are also in use.
Other civilizations were contemporary with the colonial period and were described in European historical accounts of the time.
A few, such as the Maya civilization, had their own written records.
Some genetic studies estimate the colonization of the Americas dates from between 40,000 and 13,000 years ago.
The chronology of migration models is currently divided into two general approaches.
The Inuit and related peoples arrived separately and at a much later date, probably during the first millennium CE, moving across the ice from Siberia into Alaska.
Paleo-Indian adaptation across North America was likely characterized by small, highly mobile bands consisting of approximately 20 to 50 members of an extended family.
It is affiliated with the Chemistry Department at the University of Calgary and continues to serve as a contact point between industry and academia, striving to provide an expert level of scientific and technological support to all those that require or are interested in understanding of the chemistry of sulfur and its compounds. is located at the University Research Centre, #6 - 3535 Research Road N.
The Pre-Columbian era incorporates all period subdivisions in the history and prehistory of the Americas before the appearance of significant European influences on the American continents, spanning the time of the original settlement in the Upper Paleolithic period to European colonization during the Early Modern period.
was incorporated as a not-for-profit research organization in 1964.