Mepụta ụdị nke ahịrịokwu a nke dị mgbagwoju anya Ihe a na-akpọ nnukwu keelson bụ n'ezie 7.5m ogologo mast-step osisi nke e ji osisi oak mee nke na-eme ka etiti axial ahụ dị okpukpu abụọ.
N'ezie, ụdị nkebi ahịrịokwu ahụ dị mgbagwoju anya bụ "Ihe a na-akpọ nnukwu keelson bụ n'ezie 7.5m ogologo osisi osisi - osisi osisi e ji osisi oak mee nke na-eme ka usoro axial ahụ dị okpukpu abụọ na ndị na-agbanye ụdọ, kpọgidere na okpokolo agba, na-eme ka ahụ ahụ dịkwuo ike n'ogologo. "