6-4 C A U T I O N LASER RADIATION - DO NOT STARE INTO BEAM. 0.5x10 W CW HELIUM NEON LASER CLASS II LASER PRODUCT -3 C A U T I O N LASER RADIATION - DO NOT STARE INTO BEAM OR VIEW DIRECTLY WITH OPTICAL INSTRUMENTS 2 x10 W CW HELIUM NEON LASER CLASS IIIa LASER PRODUCT -3 CM 632.8 NM 2 CAUTION LASER RADIATION - DO NOT STARE INTO BEAM OR VIEW DIRECTLY WITH OPTICAL INSTRUMENTS INVISIBLE LASER RADIATION - AVOID DIRECT EXPOSURE TO BEAM 0.15 JOULE. 30 x 10 SEC. -9 CM2 NEODYMIUM LASER CLASS IIIb LASER PRODUCT 1060NM DANGER INVISIBLE LASER RADIATION - AVOID EYE OR SKIN EXPOSURE TO DIRECT OR SCATTERED RADIATION 100 WATTS, CW CO   LASER 10600 NM 2 CLASS IV LASER PRODUCT DANGER NEODYMIUM LASER DO NOT AIM AT PERSONNEL OR AT FLAT GLASS SURFACES DANGER MRP3f0602 632.8 NM CLASS IIIa LASER PRODUCT Figure 6-2. Laser warning signs. DANGER DANGER EXPLOSIVE VAPORS NO SMOKING OR OPEN FIRE WA R N I N G DO NOT ENERGIZE ELECTRONIC EQUIPMENT UNTIL VENTILATION BLOWERS HAVE BEEN OPERATING A MINIMUM OF FIVE MINUTES TO EXPEL EXPLOSIVE VAPORS DANGER PERSONNEL ARE CAUTIONED TO GUARD AGAINST POISONOUS EFFECTS OF SMOKE PIPE GASES WHILE SERVICING EQUIPMENT ALOFT. WHEN SERVICING EQUIPMENT IN THE WAY OF SMOKE PIPE GASES USE OXYGEN BREATHING APPARATUS AND A TELEPHONE CHEST OR THROAT MICROPHONE SET FOR COMMUNICATION WITH OTHERS IN WORKING PARTY. OBTAIN NECESSARY EQUIPMENT BEFORE GOING ALOFT. MRP3f0603 Figure 6-3. Typical warning signs.