(1) “Assistant stationary engineer”;
(2) “Data processing analyst”;
(3) “Specialized data processing analyst”;
(4) “Pipe insulator”;
(5) “Building consultant”;
(6) “Cabinet maker”;
(7) “Electrician”;
(8) “Electrical mechanic”;
(9) “Tinsmith”;
(10) “Machinist (millwright)”;
(11) “Master electrician”;
(12) “Refrigeration machinery master mechanic”;
(13) “Master plumber”;
(14) “Millwright”;
(15) “Stationary engineer”;
(16) “Refrigeration machinery mechanic”;
(17) “Carpenter”;
(18) “Data processing operator, class I”;
(19) “Data processing operator, class II”;
(20) “General caretaker”;
(21) “Maintenance worker”;
(22) “Painter”;
(23) “Plasterer”;
(24) “Plumber or pipe-mechanic”;
(25) “Welder”;
(26) “Building service technician”;
(27) “Computer technician”;
(28) “Specialized computer technician”;
(29) “Instrumentation and control technician”.