Not Economically Viable was created in 2004.
Yes
It is crucial to explore sustainable agricultural practices that are economically viable for farmers.
It was not thought to be economically viable.
Jim is not economically viable because he is homeless.
It was an economically viable option to use slaves.
A mineral that is useful and economically viable to extract and purify is an ore.
The production of CO2 from limestone, known as calcination, is not a direct way to produce CO2 as it releases it as a byproduct. Economically, this process can be viable in industries that can capture and utilize the released CO2, such as in the production of cement or in carbon capture and storage technologies.
pipelines
Whilst a high pressure would favour the products in equilibrium it is not economically viable to produce and maintain such a high pressure. By use of a Vanadium (V) Oxide cataylst this process is able to be carried out at normal pressure and be economically viable.
Not really at this time. Solar energy would be viable once fossil fuel energy source become possibly double (the cost) of what they are today. This sector is taking a gamble on new environmentally friendly philosophy that the world has recently embraced. Thus, would solar energy ever be economically viable? no doubts it will be just not at this time.
Sometimes extracting the metal would cost more than would be economically beneficial, either because of where it is located, the process that would need to be used to extract it, or other reasons.
Corn needs large plots of land to be economically viable as a crop, so it is not grown commercially in any cities.