 ... are employed shall, while work is carried on therein, be so ventilated that the air shall not become so impure as to be injurious to the health of the persons employed therein and so that all gases, vapors, dust or other impurities injurious to health,...  The Heating and Ventilating Magazine - Страница 391914Пуни преглед - О овој књизи
 | United States. Bureau of Education - 1906 - 1296 страница
...privy, or nuisance; shall be provided with a sufficient number of proper water-closets, earth closets, or privies, and shall be ventilated in such a manner...not become so impure as to be injurious to health. The provisions of this section shall be enforced by the inspection department of the district police.... | |
 | United States. Office of Education - 1906 - 1290 страница
...privy, or nuisance; shall be provided with a sufficient number of proper water-closets, earth closets, or privies, and shall be ventilated in such a manner...not become so impure as to be injurious to health. The provisions of this section shall be enforced by the inspection department of the district police.... | |
 | 1890 - 526 страница
...reports : — Sm : — In regard to the law requiring every public building and eveYy school-house to be ventilated in such a manner that the air shall not become so exhausted as to be injurious to the health of the persons present therein, I have to report that, while... | |
 | United States. Bureau of Education - 1896 - 1270 страница
...privies for the reasonable use of the pupils attending such schoolhouse. SEC. 321. Every schoolhouse shall be ventilated in such a manner that the air shall not be injurious to the health of the persons present therein. SEC. 322. Whenever it shall be found by... | |
 | Massachusetts - 1904 - 648 страница
...sufficient number of proper water-closets, earth closets or privies, and shall be ventilated in euch a manner that the air shall not become so impure as to be injurious to health. The provisions of this section shall be enforced by the inspection department of the district police.... | |
 | United States. Bureau of Labor - 1904 - 1428 страница
...more women or young persons are employed shall, while work is carried on therein, be so ventilated . Said notice may be given to said employees by posting in th the health of the persons employed therein and so that all gases, vapors, dust or other impurities... | |
 | 1904 - 1154 страница
...more women or young persons are employed shall, while work is carried on therein, be so ventilated that the air shall not become so impure as to be injurious to the health of the perrons employed therein and so that all gases, vapors, dust or other impurities... | |
 | Joseph Augustus Moore - 1905 - 220 страница
...privy or nuisance, shall be provided with a sufficient number of proper water closets, earth closets, or privies, and shall be ventilated in such a manner...not become so impure as to be injurious to health. The provisions of this section shall be enforced by the inspection department of the district police.... | |
 | Massachusetts - 1905 - 952 страница
...more women or young persons are employed shall, while work is carried on therein, bo so ventilated that the air shall not become so impure as to be injurious to the health of the persons employed therein, and so that all gases, vapors, dust or other impurities... | |
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