Since the middle of the 1820s, numerous works comprising coke blast furnaces as well as puddling and rolling mills were built in the coal mining areas around Liège and Charleroi.

Since northeastern Pennsylvania was a rich source of anthracite coal, anthracite-fired furnaces using locally available iron ores were built throughout eastern Pennsylvania, helping to make the state a leader in iron production in the latter half of the 19th century.

Since smoke-producing constituents are driven off during the coking of coal, coke forms a desirable fuel for stoves and furnaces in which conditions are not suitable for the complete burning of bituminous coal itself.

Since steel is difficult to manufacture owing to its high melting point, normal fuels and furnaces were insufficient and the open hearth furnace was developed to overcome this difficulty.

Since 1972, two actors have portrayed Dave Lennox in advertising campaigns for Lennox-branded air conditioners, furnaces, and indoor air quality products.

Since 1945, traditional industry ( blast furnaces and glassware ) has declined.

Since then, and since the pure grain had gotten him divorced from every decent -- and even indecent -- group from Greenwich Village to the Embarcadero, he had become a sucker-rolling freight-jumper.

Since appeals to morality, to humanity, and to sanity have had such small effect, perhaps our last recourse is the deterrent example.

Since his seizure, Scotty had had little appetite ; ;

Since Mr. McKinley had to give a lecture, Rachel and Scotty drove home alone in the Plymouth.

Since she could not act, one part suited her as well as any other, and so she was the first person to offer Mr. Lincoln a glass of water, holding it up to the box, high above her head, to Miss Harris, who had asked for it.

Since the Santo Spirito hospital had taken only men, he had had no experience in the study of female anatomy ; ;

Since then, the flowers she had planted had spread all over the hill.

Since he had gross income of $600 or more, he must file a return in which he may claim an exemption deduction of $600.

Since the writer had established this democratic procedure in the beginning he had to go along with their decision -- after, of course, pointing out whether he thought their decision was a wise or an unwise one.

Since the writer had not noticed this characteristic in married students scattered throughout the various sections previous to this experiment, nor, as a matter of fact, in those who were continuing in `` single sections '', he can only conclude that there must have been something `` contagious '' within the specific group which caused this to occur.

Since the details of the elections were settled the change of government had no direct effect on the technical aspects of the elections, and may have been more important as an indication of royal displeasure with the U.N.F.P.

Since the strength of the Mexicans had been underrated, too small a posse had been collected, and since the deputy had not been provided with search warrants, MacPherson and his men decided it was much wiser to withdraw.

Since the magnitude of the plan made secrecy impossible, once the wheels had began to turn, persons controlling German industries, social institutions, and armed forces became, through their anti-Semitism or their tolerance of it, conscious accomplices of Hitler's crimes ; ;

Since Mrs. Calhoun remembered only that the marriage had been in the spring, he started to plod through several months.

Since then he had worked at this and that, though some said his main interest was gambling.

Since Election Day, Vice President Richard Nixon had virtually retired -- by his own wish -- from public view.

Since he possessed more power in an interdependent universe of living beings and dead spirits, the emperor had to use it for the benefit of the living.

Since attack serves to stimulate interest in broadcasts, I added to my opening statement a sentence in which I claimed that German youth seemed to lack the enthusiasm which is a necessary ingredient of anger, and might be classified as uninterested and bored rather than angry.

Since the homosexuals widely use marijuana, they do not have to be initiated.

Since the hazards of poor communication are so great, p can be justified as a habitable site only on the basis of unusual productivity such as is made available by a waterfall for milling purposes, a mine, or a sugar maple camp.

Since a civilizational crisis involves also a crisis in private interests and in the ruling class, reaction is normally found among those who feel themselves to be among the ruling class.

Since more is known about Quiney than about any other acquaintance of Shakespeare in Stratford, his career may be followed to its sudden end in 1602.

Those famous lines of the Greek Anthology with which a fading beauty dedicates her mirror at the shrine of a goddess reveal a wise attitude: `` Venus, take my votive glass, Since I am not what I was, What from this day I shall be, Venus, let me never see ''.

Since Laos is of no more purely military value to Moscow itself than it is to Washington, this approach might be expected to head off Mr. Khrushchev for the moment.

Since 1953 California has led the nation in enacting guarantees that public business shall be publicly conducted, but not until this year did the lawmakers in Sacramento plug the remaining loopholes in the Brown Act.

Since two of these could be trustees of the college, actually it would be necessary to have the consent of only one elected official to impose a levy of millions of dollars of tax revenue.

Since he has just shown who is top dog, he may not be ready to receive this highest honor in the gift of the Soviet people.

Since his Christ was to be life size, how was Mary to hold him on her lap without the relationship seeming ungainly??

Since broadcast frequencies are very limited in number, these objectives are to some extent inconsistent in that not all of them can be fully realized, and to the extent that each is realized, there is a corresponding reduction of the possibilities for fullest achievement of the others.

Since April 15, 1962, is on Sunday your return for the calendar year 1961 will be timely filed if it is filed on or before Monday, April 16, 1962.

Since he can neither accept nor reject them all, he must be governed by the time and energy available for his prime professional obligations.

Since fly cutters are one sided and not balanced, they should be used at the slowest speed available, and fed very slowly to avoid binding.

Since there are almost no schools in the country offering graduate work in interior design this rule cannot at present be observed.

Since most European cars average more miles per gallon of gasoline than American cars, it naturally follows that the cost per kilometer for these models will be less, but the greater seating capacity of the large American cars will equalize this, provided your group is sufficiently large to fill a 7-passenger limousine.

Since the absorption of radio waves in rocklike material varies with wave length, it should be possible to sample the temperature variation at different depths beneath the surface and possibly detect changes in the structure or composition of the lunar surface material.

Since Af is ferromagnetic, we felt that any results obtained from the magnetically contaminated Af would be suspect.

Since there is a continual loss of micrometeoritic material in space because of the radiation effects, there must be a continual replenishment: otherwise, micrometeorites would have disappeared from interplanetary space.

Since a Skeletal Age rating can be made at any age during growth, from Elbow, Shoulder, Knee, or Foot as well as Hand, it seems to be the method of choice when one wishes to study most aspects of skeletal developmental progress during childhood.

Since emotional reactions in the higher vertebrates depend on individual experience and are aroused in man, in addition, by complex symbols, one would expect that the hypothalamus could be excited from the cortex.

Since electrical stimulation of the posterior hypothalamus produces the effects of wakefulness while stimulation of the anterior hypothalamus induces sleep, it may be said that the reactivity of the whole organism is altered by a change in the autonomic reactivity of the hypothalamus.