Heavy machinery is needed in mining for exploration and development, to remove and stockpile overburden, to break and remove rocks of various hardness and toughness, to process the ore and for reclamation efforts after the mine is closed.

Saul Bellow and Bernard Malamud, through intellectual toughness, perception, through experience in fact, have obviously liberated themselves from any sentimental Krim self-indulgence they might have been tempted to.

Basing action on the empirical determination of cause and effect provides a toughness and bravado that no powerful otherworldly ancestor could ever impart -- plus the added liberation from the constraint of silent burial urns.

As a gemstone set into jewelry it is vulnerable to breakage and abrasion from general wear, as its hardness and toughness are poor.

Porsche started to evolve a line of sports prototypes from the late 1950s ; noted for their toughness and reliability they started to win in races of attrition such as the Targa Florio and as they grew bigger ( via the Porsche 910 to the Porsche 908 and finally the Porsche 917 ) the Stuttgart marque became first a competitor for overall wins and then came to dominate sports car racing – both they and Mercedes have made intermittent returns to the top level of the sport through the 1970s, 80s and 90s.

As a young boy, Patel helped his father in the fields and twice a month kept a day-long fast, abstaining from food and water — a Hindu cultural observance that helped him to develop physical toughness.

The resulting projectiles gradually change from high hardness ( low toughness ) at the head to high toughness ( low hardness ) at the rear and were much less likely to fail on impact.

The rectangular chad from punched cards is unsuitable due to the sharp corners and the toughness of the card stock risking eye injury.

The roots are remarkable for their toughness, size, and tenacity to life, and roots readily grow from aerial parts of the plant.

Certain sections of the borough, such as Dutch Hill and the South Ward, had a reputation for " toughness "; those sections were also densely populated by immigrants from southern and eastern Europe.

The toughness, strength, and translucence of porcelain arise mainly from the formation of glass and the mineral mullite within the fired body at these high temperatures.

Ceramic tiles draw little or no advantage from sloped armour as they lack sufficient toughness to significantly deflect heavy penetrators.

The US victory came largely from the toughness of the fighting force, Spruance's combination of coolness plus his caution at just the right moments, and large doses of plain luck.

He showed his toughness after he suffered an injury from a devastating hit by at the hands of Memphis Maniax defensive end Shante Carver in Week 5.

Yvette Cooper, the Shadow Home Secretary, who was seen as a Brownite has now been recently described as a Blairite for her toughness on law and order but also has been gaining support from key Blairites such as John Rentoul, Dan Hodges and fellow shadow cabinet members.

It is not, however, good for cakes, which are made from soft wheat to prevent toughness.

He and Clarke feuded in the media, with Clarke questioning his toughness ; Lindros spent many games on the injured reserve and suffered a series of concussions, the first in 1998 from a hit delivered by Pittsburgh's Darius Kasparaitis that sidelined him for 18 games.

Lapierre by contrast had what a commentator described as a " rough and tumble, shoot from the lip style of politics ", being known for his flamboyance, aggressiveness, his toughness, his rudeness and arrogance.

Currently, most armoured vehicles have their basic structure formed from RHA to lend general strength and toughness against general threats.

Particularly known for their baggy clothing, symbolising a hand me down from an older relative of a bigger build as a sign of toughness.

Dobson ’ s scruffy, rough-around-the-edges vocal approach gave this band some toughness that is quite different from their current incarnation.

Born in 1945, Daniel Dreiberg, a Batman-like figure, relied more upon technical wizardry and tools than toughness, which set him apart from his fellow costumed adventurers.

Fracture toughness testing is very expensive and engineers believe that sufficient information for selection of steels can be obtained from the simpler and cheaper Charpy impact test.

Eventually a modification of Griffith ’ s solids theory emerged from this work ; a term called stress intensity replaced strain energy release rate and a term called fracture toughness replaced surface weakness energy.

He would later say of his time on the streets there, that he learned " all the meanness, all the toughness it's possible for kids to acquire.

But she's so lonely and so desperate, and all of her toughness comes out of trying to cover that.

However, when toughness is called for ( particularly in dealing with the regular villain, Croc ), she is the toughest Wuzzle of all.

* Fractions, especially 1 / 2, can be used where only natural numbers could be used before: casting costs, damage, life totals, mana, power, and toughness can all be affected.

As the Jaguar he possessed, in addition to the expected feline abilities, all the powers of the animal kingdom only a thousand times more powerful ( the oft-quoted magnified toughness of a rhinoceros ' hide, for example, gave him near Superman level invulnerability ), plus he had the Aquaman-style telepathic ability to mentally communicate with and command all animals including those from alien worlds.

* Dynamic difficulty: Dubbed the Personal Challenge System, SiN Episodes adapts itself to the player's skill level and varies the skill, numbers and toughness of enemies faced in accordance the player's performance to ensure a suitable level of challenge as well as to help pace the player through the game, ensuring an even game length across all skill levels.

This is somewhat necessary because all of the Kinet's low-cost creatures have only 1 or 2 points of toughness.

After the competition, she gave in all her toughness and mentality.

The Woodleigh soft nose was designed to expand at the lower velocities of the. 470 Nitro Express, and the fact that it held together at all in the 470 Capstick is testimony to the Woodleigh ’ s toughness.

" Her incomparable hunger to always improve, hard work, focus and mental toughness have combined to make her the best batter in the women's game ... Claire has earned the respect of all who have played with her, against her, or who have had the pleasure of watching her.

It is in this theater that students live and train. For no matter, how crucial physical fitness is, it all depends on mental toughness to survive, trust No One and be alert.

In most cases, the occurrence of interfacial fracture for a given adhesive goes along with a smaller fracture toughness.

Conchiolin serves as a relatively flexible, crack-deflecting matrix for the mineral aggregate particles ; its strength and the strong bonding of perlucin can in some cases ( such as in the formation of nacre ) give the finished material an impressive level of toughness.

Cellulose acetate butyrate is used extensively for vacuum-formed signs, background panels, and molded or formed letters because of its exceptional toughness, ease of forming, and excellent weathering properties.

`` As long as Mr. Khrushchev is convinced that the balance of world power is shifting his way, no amount of either smiles or toughness, neither Camp David talks nor kitchen debates, can compel him to enter fruitful negotiations ''.

The feeling was that he would sense an inner core of toughness and determination in the President and that plain talk by Mr. Kennedy would give him pause.

Though his character is broader and more comically rounded than the don, he gives it a firmness and toughness -- a sort of peasant dignity -- too.

Alloys are often made to alter the mechanical properties of the base metal, to induce hardness, toughness, ductility, or other desired properties.

Ancient civilizations took into account the mixture and the various properties it produced, such as hardness, toughness and melting point, under various conditions of temperature and work hardening, developing much of the information contained in modern alloy constitution diagrams.

Once the Bessemer process began to gain widespread use, other alloys of steel began to follow, such as mangalloy, an alloy of steel and manganese, which exhibits extreme hardness and toughness.

Jackson was nicknamed " Old Hickory " because of his toughness and aggressive personality ; he fought in duels, some fatal to his opponents.

Modern glues have improved flexibility, toughness, curing rate, and chemical resistance.

Designed for use in marine service owing to its corrosion resistance, hardness and toughness.

Bronze was especially suitable for use in boat and ship fittings prior to the wide employment of stainless steel owing to its combination of toughness and resistance to salt water corrosion.

( Small imperfections in the ceramic material with its low fracture toughness lead to cracks, which can lead to potentially dangerous equipment failure.

Most emeralds are highly included, so their toughness ( resistance to breakage ) is classified as generally poor.

He demonstrated his toughness and courage in the most difficult situations, including disasters and retreats.

With his friends jostling and pushing on both sides and behind, and his enemies forming a solid wall in front of him, the hoplite had little opportunity for feats of technique and weapon skill, but great need for commitment and mental toughness.

It teaches a curriculum that emphasizes aliveness, physical toughness, and full contact sparring.

* Micarta is a popular handle material on user knives due to its toughness and stability.

Iron alloyed with various proportions of carbon gives low, mid and high carbon steels, with increasing carbon levels reducing ductility and toughness.

For the steels, the hardness and tensile strength of the steel is related to the amount of carbon present, with increasing carbon levels also leading to lower ductility and toughness.

The task of the metallurgist is to achieve balance between material properties such as cost, weight, strength, toughness, hardness, corrosion, fatigue resistance, and performance in temperature extremes.

Metals exposed to cold or cryogenic conditions may endure a ductile to brittle transition and lose their toughness, becoming more brittle and prone to cracking.