Ịchụ osisi na Skyline
Skyline logging (ma ọ bụ skyline yarding) bụ ụdị osisi nke eriri nke a naebugharị osisi ndị a naewepụta na eriri ígwè kwụ ọtọ (ụzọ eriri ma ọ bụ "highline") site nebe a naegbutu osisi gaa nebe nhazi etiti.  

Cable loop nke horizon naagba gburugburu pulley drive, nozuzu na njedebe nnyefe etiti, na pulley nloghachi na njedebe nchịkọta; enwere ike ịkwaga pulley nchịkọta na mpaghara ndị ọzọ nime ihe mgbochi nke usoro ahụ ma nwee ike ịrụ ọrụ nebe buru ibu.

A naejikọta osisi ọ bụla na eriri a kwụsịtụrụ site na eriri choker na ụgbọ ala. A skyline yarder nwere ike ịdọrọ 5 ruo 10 logs notu oge, naeji dị iche iche chokers. A naetinye pulleys nelu ụlọ elu ma ọ bụ cranes, osisi ndị ọzọ, ugwu, ma ọ bụ, nọnọdụ ndị a naadịghị ahụkebe, helium balloons.

Hụkwa 

 Ịchụ osisi na eriri

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