preparation for high-altitude work

alpinism alpinist ascension balcony builder building business carabiner climb climber climbing construction dangerous equipment exterior extreme guy hang height helmet high high-altitude industrial industriekletterer installing job male man one outdoors outside preparation preparing professional protection risk roof rope ropeaccess ropeaccesstechnician ropeprotector ropework safety structure system trabajosenaltura urban wall work worker workingatheights workman workwear young