The Asia Miner

OCT-DEC 2018

The ASIA Miner - Reporting Important Issues to Mining Companies in the Asia Pacific Region

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the asia miner • volume 15 • issue 4 46 PRODUCT NEWS Reynolds Soil Technologies (RST) launched a new economical compacঞon aid for bulk earthworks in mining and civil construcঞon projects. COMPAC is the latest technology developed by RST in response to industry demand for faster, environmentally-safe and cost-effecঞve bulk compacঞon methods for earthworks material as part of a drive by civil contractors for more project opঞmisaঞon strategies. Developed in addiঞon to RST's exisঞng suite of products to further assist with earthworks compacঞon and stabilisaঞon issues, COMPAC enables higher levels of compacঞon of all material types in all civil construcঞon projects, using less energy, water and construcঞon ঞme. RST operaঞons and technical director David Handel says COMPAC is an affordable way for civil contractors, mine site project operators and civil engineers to improve compacঞon methods and achieve higher levels of material compacঞon to speed up project ঞme lines and compleঞon dates. "The result of our technical research and development is an environmentally- safe addiঞve, which, when added to compacঞon water at very low dosage rates, speeds up the compacঞon process using less water by allowing the water to penetrate and spread evenly through the material being compacted," he said. When added to compacঞon water, COMPAC disperses through the bulk material that is being compacted, lubricaঞng the parঞcles so they move closer and ঞghter together in a shorter ঞme frame, with less moisture. "COMPAC accelerates the rate at which the material loses its porosity due to the effects of loading," Mr Handel explained. This increases stability by enabling soil and gravels to aain a much higher density and strength can then be achieved in usual substandard natural surface-building materials. Diluted into water at ultra-low dosage rates of 200ml per cubic metre of material, COMPAC is safe for the environment while enabling beer long-term surface performance due to a greater depth of compacঞon of the construcঞon material. "COMPAC reduces void spaces between the individual soil parঞcle primarily through a lubricaঞng and dispersive acঞon which results in a more efficient packing of the parঞcles, deepening the effect of the mechanical compacঞon. RST, an Australian business operaঞng globally, has three decades of experience in developing versaঞle and effecঞve environmental management soluঞons across a range of industry sectors including mining, quarrying, waste management, civil construcঞons and manufacturing. RST's COMPAC promises environmentally-safe and cost-effecve bulk compacon methods for bulk earthworks RST launches COMPAC for faster and cost- effective bulk compaction in earthworks Ausdrill's fully owned subsidiary MinAnalyঞcal has received accreditaঞon to internaঞonal standards for its ground- breaking PhotonAssay™ unit, following a rigorous validaঞon process. The Naঞonal Associaঞon of Tesঞng Authoriঞes (NATA) – Australia's naঞonal accreditaঞon body for laboratories, inspecঞon bodies and calibraঞon services – has issued accreditaঞon in compliance with ISO/IEC 17025 – Tesঞng. MinAnalyঞcal's General Manager Gary Wheeler believes that the tesঞng and validaঞon are an assurance that the system will produce accurate results that have been benchmarked against fire assay. "With installaঞon, commissioning and validaঞon of the PhotonAssay unit now completed, we are able to offer this service to our customers", commented Mr Wheeler. According to Ausdrill, interest from mining companies has been very strong since the Chrysos PhotonAssay machine was unveiled mid this year. In addiঞon to the PhotonAssay machine at MinAnalyঞcal's laboratory in Perth, MinAnalyঞcal plans to commission two similar units in Kalgoorlie in the Western Australian Goldfields in early 2019. The technology, developed by CSIRO, slashes the ঞme it takes to analyse a drilling sample from days to hours. The PhotonAssay instrument combines speed with a high degree of reliability, and is an alternaঞve to the tradiঞonal fire assay process. It represents a chemical-free approach to material analysis that gives accurate results in minutes. It uses a larger sample size than fire assay, with reduced sample preparaঞon. A further benefit is the potenঞal of tesঞng a sample repeatedly if required, unlike fire assay, which involves the destrucঞon of the sample. The first machine has the capacity to analyse up to 40,000 samples per month. Samples prepared for the photon assay unit Ausdrill's innovative mineral analysis technique achieves accreditation

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