While traditional extraction methods had persisted there were vital changes in the ways in which ore was prepared for smelting and in the smelting process itself.
42.
That means the oil sands that use surface mining or more technologically advanced steam-driven extraction methods to produce almost 1 million barrels of oil each day.
43.
I didn't even realize the first para was an extraction method on my first read until I saw you suddenly jumped to " another " one.
44.
The Spanish Captain Francisco de Mirones and a Franciscan priest were sacrificed using the heart extraction method after being bound to the forked posts of the church.
45.
Proven worldwide reserves are now about one trillion barrels, a figure that tends to rise over time with new exploration, cheaper extraction methods and changes in price.
46.
Also, this study was performed on shea butter that had been extracted with hexane, and the authors note that traditional extraction methods may result in higher phenolic levels.
47.
The hot water extraction method is the preferred method of many carpet manufacturers as it removes more dust and abrasive particles resulting in less wear and pile abrasion.
48.
A change to three shifts and extraction methods had worried the miners, who believed that the face moved forwards too fast and that gas was not being dispersed sufficiently.
49.
The winning of heavy metals from their ores is a complex function of ore type, the chemical properties of the metals involved, and the economics of various extraction methods.
50.
Extraction techniques that are categorized as " conventional " use " unconventional means " such as gas re-injection or the use of heat " not traditional oil extraction methods.
