The reserves were expected to last for another 15 years as of 2010 at the extraction rate of 1, 433 metric tons of concentrate.
22.
However, as the extraction rate approaches 100 % ( whole meal ), the protein content drops slightly, while the ash content continues to rise.
23.
Greater efficiency was also evident in the higher extraction rate which recorded 21.1 per cent in 1997 as compared to 19.7 per cent in 1996.
24.
The colliery exploited six seams containing of coal which could give a working life of around 200 years ( at an extraction rate of per annum.
25.
Often many wells ( called " multilateral wells " ) are drilled into the same reservoir, to ensure that the extraction rate will be economically viable.
26.
Hubbert _ peak _ theory covers the general concepts of eventual decline in extraction rates . talk ) 14 : 11, 20 August 2015 ( UTC)
27.
Logging activities are expected to start early next year and based on Innovest's estimates, the initial extraction rate is about 350, 000 cu metres a year.
28.
Natural gas production will increase yearly until 2005 and level off at 6 billion cubic feet a day, an extraction rate allowing at least 50 years'production.
29.
Unless big new discoveries are made, the Inter-American Development Bank says, Trinidad's existing reserves guarantee only 20 years of gas and oil production at current extraction rates.
30.
Venezuela wants more foreign investment in oil and gas exploration, even as it plans to double extraction rates for private companies, Energy Minister Alvaro Silva Calderon said Monday.
