... baseline design parameters and issues in the development of commercial manganese nodule mining systems from the deep seabed in the 2,000–6,000-m depth range. Among the four consortia, the Ocean Minerals Co. (OMCO)/Lockheed reported the two full-scale tests and concurrent development of a commercial deep...

... ABSTRACT India has been developing technology for deep sea mining to harvest polymetallic nodules from the Central Indian Ocean Basin (CIOB). The seabed mining system is a crawler type mining machine. The mining machine collects the nodules from the seabed, crushes them into smaller sizes...

... responsible for developing technologies for deep sea mining system for harvesting the polymetallic nodules from water depth of 5000–6000 m. Of the two part mining system conceived, the seabed mining system is a crawler type mining machine. The mining machine collects the nodules from the seabed, crushes them...

... of the test miner tracked vehicle for collecting deep-sea manganese nodules has been achieved. KEY WORDS: Ocean mining system; deep-sea manganese nodule miner; deep-sea environmental variable; screening technique; kriging metamodel; multiplicative decomposition method; robust optimization. INTRODUCTION A deep...

... A 5,000-m-long, 15-in (38-cm) outer-diameter, full-scale pipe was deployed from the large Moon Pool of the Hughes Glomar Explorer while a deep-ocean mining system operated from the ship in the North Pacific Ocean in 1976 and 1979. From the standpoint of design as well as operation, one...

... ABSTRACT The deep seabed mining system is generally composed of surface vessel, lifting system, buffer, flexible pipe and miner. The mining system is regarded as a large-scale system in which each subsystem is interconnected to other ones. In order to control a large-scale system...

... ABSTRACT In order to reduce the amplitude of longitudinal vibration as well as the axial stress induced in the pipe string, an active control was applied to the mining system. In the proposed system, the string was hung from the mining ship and supported at the upper part with a linear spring...

... The R&D of "Manganese Nodule Mining System," a Japanese national project, started in 1981. The Technology Research Association of Ocean Mineral Resources Mining System was in charge of this project. Since fiscal year 1997 was the [mal year of this project, four ocean and on-land experiments...

... technologies for deep-ocean mining systems to recover manganese nodules and cobalt-rich manganese crusts from the seafloor at 800 - 6,000m depth. First, the seafloor crust is characterized on the basis of preliminary data from the recent survey in the Pacific Ocean. In the last 10 years, few significantly new...

... and Development Project of Manganese Nodule Mining System" since 1981. Many activities on the research and development of the system have already been performed. One of the most important structural elements is the lifting pipes with its function as the nodule transfer channel and a mean of towing the collector...

... ABSTRACT The Agency of Industrial Science and Technology [AIST]. the Ministry of International Trade and Industry Japan [MITI]. started the Large-Scale Project entitled "The Research and Development Project of Manganese Nodule Mining System" in 1981. The mining system of this project consists...

... al, 1988). operation wire rope exploration mining operation ballast weight metals & mining breakdown free fall grab collector artifact collector unit seafloor support unit mining system mining collector steel wire rope ship miner vehicle dredge nodule Proceedings...

... environment are calculated based on the results of module lifting tests and the production rate of a commercial module mining system. The amounts and the size distribution of the discharged solids, consisting of lifted sediment sand fine abraded nodule., are also calculated. INTRODUCTION Deep-sea...