Sentences with phrase «world coal production»

These two considerations are not the only ones determining the future of world coal production.

Since 1970, 85 per cent of the growth in world coal production has come from these three countries.

The following figure provides a summary of past and future world coal production in energy terms based on a detailed country - by - country analysis.

When Chinese coal production peaks, world coal production peaks as well.

Thus, declining world coal production throughout the second half of the twenty - first century will be inevitable.

The largest uncertainty in projecting future world coal production is determining whether such reserve reductions might occur in other regions, or whether reserves could increase given substantial real price increases.

From 1950 to 1985, world coal production increased steadily, growing 144 per cent from 1823 to 4450 million metric tons (tonnes).

More importantly, China provided 71 per cent of the increase in world coal production from 2000 to 2007.

David Rutledge, an engineering professor at the California Institute of Technology who studies world coal production, said the IPCC's «business as usual» scenario is unrealistic because it essentially assumes that growth of fossil fuels like coal will continue apace, which is unlikely.

In the 50 years between 1950 & nd 2000 he expected world coal production to be 2.5 Q, oil to be 6.5 Q, others to be 0.7 Q giving a total of 9.7 Q.

Growth in world coal production since 1950 is primarily due to major increases in coal production in China, India, and Australia.

The story of world coal production after 2025 is essentially the story of the struggle to replace stabilized and then declining Chinese coal production.

From 1985 to 2000, world coal production essentially stagnated, growing slowly in the late 1980s and declining gradually during the 1990s as natural gas and other sources displaced coal.

All three cases show world coal production peaking within the next 30 years (table 5).

The irregular growth of world coal production conceals dramatic changes in the composition of production by geographical area.

China is the largest producer, providing 40 per cent of world coal production in 2007.

Forecasting future world coal production is a complex task, incorporating considerations of the amounts and the qualities of known and projected coal reserves, the ability to increase coal production capacity and the growth of coal demand.

Underground mining currently accounts for a bigger share of world coal production than opencast; although in several important coal producing countries surface mining is more common.

All in all, the companies listed in the GCEL represent over 88 % of world coal production and 86 % of the world's coal - fired capacity.

Assuming that 10 % of world coal production can be diverted to CTL, the contribution to liquid fuel supply will be limited to only a few mega barrels per day.

Because China currently dominates world coal production, the path of future world coal production will be dominated by the path of Chinese coal production.

From 1950 to 2005, world coal production of all grades (anthracite, bituminous, subbituminous and lignite) grew substantially, but irregularly (table 3).

The most significant aspect of these scenarios is not the peaking of world coal production, but the immense amounts of coal estimated to be produced in the 45 years from 2006 to 2050.

These two areas — China and Wyoming, which provided 46 per cent of world coal production in 2007 and 77 per cent of the increase in world coal production from 2000 to 2007 — have only 35 — 45 years of production at current rates of production and levels of reserves.

The second key argument is that world coal production has grown substantially (more than 40 %) since 2000.

The conventional wisdom is that world coal production will continue to grow over the next several decades.

World coal production, 1950 — 2005 (million tonnes).