At one time it was the ambition of every saxophone player in every high school band in America to blow like Bird.

At the rate of need indicated in the early weeks of the month, this could mean a shortage of as high as $17,000.

At the start of a new industrial age in the 18th century, it was believed that " people are the riches of the nation ", and there was a general faith in an economy that paid its workers low wages because high wages meant workers would work less.

At Mulhouse high school he got his " Abitur " ( the certificate at the end of secondary education ), in 1893.

At least for the younger individuals, a high running speed is plausible.

* 1889 – At high noon, thousands rush to claim land in the Land Run of 1889.

At the suggestion of his friend Benjamin Ruff, Carnegie's partner Henry Clay Frick had formed the exclusive South Fork Fishing and Hunting Club high above Johnstown, Pennsylvania.

At high speeds the ailerons could apply more torque than the Spitfire's thin wings could handle, and the entire wing would twist in the opposite direction.

At the same time annual inflation in the economy was variable and during the last five years ( 2003 – 2007 ) has seen a low of 2. 3 % and high of 7. 3 %.

At high temperatures, organobromine compounds are easily converted to free bromine atoms, a process which acts to terminate free radical chemical chain reactions.

At high levels of play, especially in singles, the sport demands excellent fitness: players require aerobic stamina, agility, explosive strength, speed and precision.

At high levels of play, the backhand serve has become popular to the extent that forehand serves have become fairly rare at a high level of play.

At high levels of play, doubles rallies are extremely fast.

At high levels of play, singles demands extraordinary fitness.

At high levels of play, the formations will generally be more flexible: the top women players are capable of playing powerfully from the back-court, and will happily do so if required.

At the current time, it is more economical to smelt copper ore rather than to use bioleaching, since the concentration of copper in its ore is in general quite high.

At the end of September 2003, the first part of High Speed 1, a high speed link to the Channel Tunnel and on to France and Belgium, was completed, significantly adding to the rail infrastructure of the country.

At least 10 – 20 high power ( 1000 × oil immersion ) fields are counted and an average determined.

At low pressure, there was enough space between the gas atoms that the ions could accelerate to high enough speeds that when they struck another atom they knocked electrons off of it, creating more positive ions and free electrons in a chain reaction.

At the same time, Greek fortifications began to feature high towers with shuttered windows in the top, presumably to house anti-personnel arrow shooters, as in Aigosthena.

At these very high vacuums the effect of photon radiation pressure on the vanes can be observed in very sensitive apparatus ( see Nichols radiometer ) but this is insufficient to cause rotation.

At the same time, Greek fortifications began to feature high towers with shuttered windows in the top, which could have been used to house anti-personnel arrow shooters, as in Aigosthena.

A high point for the group was their 1963 live album At Carnegie Hall, described by critic Richard Palmer as " arguably Dave Brubeck's greatest concert ".

At age 14 Sapir won a Pulitzer scholarship to the prestigious Horace Mann high school, but he chose not to attend the school which he found too posh, going instead to Peter Stuyvesant High School, and saving the scholarship money for his college education.

At the Alphonsus, three scientific objectives were determined to be of primary interest and paramount importance: the possibility of old, pre-Imbrium impact material from within the crater's wall, the composition of the crater's interior and the possibility of past volcanic activity on the floor of the crater at several smaller " dark halo " craters.

At this time a number of researchers, most notably Eugene M. Shoemaker, ( co-discoverer of the comet Shoemaker-Levy 9 ), conducted detailed studies of a number of craters and recognized clear evidence that they had been created by impacts, specifically identifying the shock-metamorphic effects uniquely associated with impact events, of which the most familiar is shocked quartz.

At the largest sizes, one or more exterior or interior rings may appear, and the structure may be labeled an impact basin rather than an impact crater.

At that time, numerous influences-including a growing awareness of the unity and fragility of the biosphere following mankind's first steps into outer space ( see, for example, the Blue Marble ), increased public concern over the impact of industrial activity on natural resources and human health ( see, for example, the 1969 Cuyahoga River fire, the increasing strength of the regulatory state, and more broadly the advent and success of environmentalism as a political movement-coalesced to produce a huge new body of law in a relatively short period of time.

At smaller scales, the relative impact of intrinsic circuit properties such as interconnections may become more significant.

At one point, Walker described Musharraf: " A capable, articulate and extremely personable officer, who made a valuable impact at RCDS.

At about the same time as this important discovery, he observed that when " p-particles ", ejected from radio-active substances, impinge upon zinc sulfide, each impact is accompanied by a minute scintillation, an observation which forms the basis of one of the most useful methods in the technique of radioactivity.

At 09: 01, two minutes before impact as United Airlines Flight 175 continued its descent into Lower Manhattan, the New York Center alerted another nearby Air Traffic Facility responsible for low-flying aircraft, which was able to monitor the aircraft's path over New Jersey, and then over Staten Island and New York Harbor in its final moments.

At least 54 million Americans had seen the series by the end of the war, and studies were done to gauge the impact of the films.

* May 8 – At Gilmore's Gardens in New York City, the first Westminster Kennel Club Dog Show opens and had a massive impact on the Civil rights movement.

At the same time, the impact of the Renaissance would soon backfire against traditional Roman Catholicism, ushering in an age of reform and a repudiation of much of medieval Latin tradition.

At present, there is no self-consistent model that starts with the giant impact event and follows the evolution of the debris into a single moon.

At these higher velocities, the hardened tip of the shot or shell has to be protected from the initial impact shock, or risk shattering.

At about age two, Brian heard George Gershwin's " Rhapsody in Blue ", which had an enormous emotional impact on him.

At the beginning of the 1800s a harbour was developed, but it was the coming of the railways in 1843 that would have the bigger impact.

At the time, two of the identified extinction events ( Cretaceous-Paleogene and Late Eocene ) could be shown to coincide with large impact events.

At impact there was an explosion and an intense fire that engulfed the capsule.

At the region of the Moon's surface exactly opposite Imbrium Basin there is a region of chaotic terrain ( the crater Van de Graaff ) which is thought to have been formed when the seismic waves of the impact were focused there after travelling through the Moon's interior.

At this point synthpop gained some critical attention, but made little impact on the commercial charts.

At impact, concenctric radii emanate from the point of percussion, but unlike conchoidal fracture, the force travels along what would be the center of the Hertzian cone.

At the time of Federation in 1901, 97 % of Australians professed to be Christians and Christianity has had an enduring impact on Australia.

At the 2008 Innovations for Poverty Action / Financial Access Initiative Microfinance Research conference, economist Jonathan Morduch of New York University noted there are only one or two methodologically sound studies of microfinance's impact.

At one time, over a third of Pennsylvania's population spoke this language, which also had an impact on the local dialect of English.