Sentence examples for too low grade to from inspiring English sources

The age of subduction-accretion of various accretionary units has been determined by ages of metamorphism where metamorphism was sufficient to generate datable metamorphic minerals and by the depositional age of clastic sedimentary rocks for rocks too low grade to yield metamorphic ages (e.g., Wakabayashi 2015) (Fig. 3).

BHP plans to move a crusher and concentrator plant now sitting on several acres of ore that was once reckoned too low-grade to be worth mining.

My anxiety went from low grade to a ten in a split second.

The option holders, however, turned down the property, claiming the ore was too low-grade.

Parameter and effect estimation for the sample species L. malachurum in fact lead to the conclusion that the environmental variation this species is exposed to is too low to necessitate graded control as an evolutionary answer.

The number of bonds in the "junk" category — too low to be considered investment grade — rose to 46 from just 9, and the agency said it anticipated that 10 of those issues could default over the next decade.

With returns on American Treasury bonds and high-grade debt too low to meet the needs of pension funds and endowments, they have to take more risks.According to the Institute of International Finance (IIF), an international banking club, some $502 billion of private capital flowed into emerging markets last year, only slightly down on the $509 billion in 2005.

This is due to a sensitivity which is still too low to evaluate the infiltrative component of high grade glioma (HGG) and low grade glioma (LGG) [ 2– 4].

Leaching in-place, or in situ leaching, is practiced on ores that are too far underground and of too low a grade for surface treatment.

Leaching processes are used when it is the simplest method or when the ore is of too low a grade for more expensive extractive procedures.

Many are very small, others are too low in grade".