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conventions were adopted for a number of other jobs: seamen (Convention 7, 1920, fixing a minimum age of 14; this was revised by Convention 58 of 1936, which raised the age to 15), agriculture (Convention 10 of 1921, which provided for a minimum age of 14, except outside school hours), and non- industrial employment (Convention 33 of 1932, which provided that children under 14, or 14 but still required to attend school, could not be employed in specified industries; the convention allowed that children between 12 and 14 could be employed outside school hours on light work.
In 1937
Convention 60 raised these minimum ages to 15 and 13 respectively). More restricted conventions dealt with fisher- men (Convention 112 of 1959, setting a minimum age of 14 for salt water fisheries), with dangerous work involving trimmers and stokers on ships (Convention 15 of 1921, setting a minimum age of 18), and underground work in mines (Convention 123 of 1965, setting a minimum age of 16). In addition, two ILO conventions, dealing mainly with other subjects, contain provisions on minimum ages: the White Lead (Painting) Convention, 1921 (No. 13) prohibits employment of all women and boys under 18 in industrial painting involving white lead or lead sulphate, and the Radiation Protection Convention, 1960 (No. 115) prohibits employment of people under 16 in work involving ionising radiations.
In addition to setting minimum ages for employment in different jobs, several of these conventions and recommendations also impose restrictions on hours and conditions of work. Convention 10 (1921), on child labour in agriculture, provides that children under 14 cannot work in any agricultural under- taking "save outside the hours fixed for school attendance". But school attendance and hours can be arranged to permit employment of children on light agricultural work (particularly at harvest), on condition that the total annual period of
Convention school attendance is not less than eight months.
No. 33 (1932), which fixes the minimum age at 14 in non- industrial jobs, allows children over 12 to be employed, outside school hours, on light work. But such work is pro- hibited at night (between 8 p.m. and 8 a.m.) and on Sundays.