It is commercially extracted from air, in which it is found in trace amounts.

From the latter, the edible pequi oil is extracted commercially.

In addition to domestic uses, commercially extracted turf is used in a number of industries, especially electricity generation.

Before coal could be extracted commercially, surface buildings were required to be completed.

Any material, natural or processed from which a metallic element is, or could be, commercially extracted.

It is commercially extracted by the fractional distillation of liquid air.

Swainsonine is extracted commercially from several species of plants and fungi, including the soil fungus Metarhizium anisopliae.

Several of Bulgaria's minerals are extracted commercially; 80 percent of mining is done by open-pit excavation.

Brazzein then can be commercially extracted from maize through ordinary milling.

Deposits of lignite are extracted commercially.