— Tin tailing, locally known in Malaysia as Amang, is the by-product of tin ore mineral acquisition, processing, and refinery. Hence, the focus was redirected in processing these residues, whereby valuable heavy minerals of Technologically Enhanced Naturally Occurring Radioactive Material (TENORM) were extracted (Alnour et al., 2017; Omar et …

Made available by U.S. Department of Energy Office of Scientific and Technical Information ...

 — Measurements of total airborne alpha activity, equilibrium equivalent concentration (EEC) of 222 Rn and 220 Rn progenies in amang processing plants in …

Made available by U.S. Department of Energy Office of Scientific and Technical Information ...

 — Measurements of external radiation level, radon/thoron daughters concentrations in air and uranium/thorium concentrations in airborne mineral dust at 16 …

DOI: 10.1016/j.ecoenv.2020.111727 Corpus ID: 230555248; Radiological hazard associated with amang processing industry in Peninsular Malaysia and its environmental impacts. @article{Sanusi2021RadiologicalHA, title={Radiological hazard associated with amang processing industry in Peninsular Malaysia and its environmental impacts.}, …

 — The ilmenite processing plant in Malaysia is run by a huge company whose initial set-up and routine operation is continuously being monitored by the AELB under the Atomic Energy Licensing Act, 1984. Exposure to radioactive dust and external radiation is greatly reduced. On the contrary, the amang-processing plants are largely backyard or …

 — The amang plants studied were of different processing capacities. Radiation dose assessments from external and internal (radon/thoron daughters and radionuclides …

 — Continuous depletion in tin productions has led to a newly emerging industry that is a tin by-product (amang) processing industry to harness mega tons of tin by-products produced in the past. Amang composed of profitable multi-heavy minerals and rare-earth elements. With poorly established safety an …

 — The value is 5 times higher than the annual dose limit for designated radiation worker (20 mSv) in Peninsular Malaysia. The study found that 41% of the total …

 — In one of his interviews, Mahathir mentioned something about Malaysia's previous mishap with something called tin tailings, locally known as amang.Amang is a waste ore from tin mining activities, and Malaysia seemed to process it once to get a material used to make color televisions. The material is probably some kind of rare earth …

Currently amang processing plants in Malaysia employ three systems of water management in the wet gravity separation process. These systems may be classified as open water system, recycle water system (natural) and recycle water system (man-made). In the open water system, water is drawn from nearby river or stream, used in wet gravity ...

 — Section snippets Location of study. The location of this study is an amang processing plant located in Dengkil, Selangor, Malaysia. Sampling. Two samples, amang and ilmenite, weighing 1. kg each were taken from the plant site.. From each sample, 500 g was used to determine the activity concentrations of Ra-226 as well as Ra-228, and 3 g …

 — In Malaysia, the amang industry is composed of both small and relatively large-scale plants. The industry employs about 1000 workers, with 50% of the 60 plants employing less than 10 workers and 24% employing less than five workers (Hewson, 1993). ... Amang processing plants have been shown to have radiological impact to its workers …

The working environment in the amang-processing plants is less conducive compared to the ilmeniteprocessing plant. The ilmenite processing plant in Malaysia is run by a huge company whose initial set-up and routine operation is continuously being monitored by the AELB under the Atomic Energy Licensing Act. 1984.

for tin tailings processing in Peninsular Malaysia. Seven amang processing plants in Perak were selected as the study area, as depicted in Figure 1. These plants were chosen based on their processing productivity, with some plants like PP5 and PP7 having ceased processing activity but still storing tin tailings when required. The

 — Malaysia's Minister of Science, Technology and Innovation Chang Lin Kang speaks during a press conference in Kuala Lumpur, Malaysia, Tuesday, Oct. 24, 2023. Australian miner Lynas Rare Earth has won a reprieve until March 2026 to continue its activities in its Malaysian plant that produce radioactive waste material.

 — Continuous inhalation and ineluctable ingestion of long-lived alpha emitting particles from 222 Rn, 220 Rn and their daughters by worker in amang processing plants. 4.

Sample locations were distant from any 'amang' processing plants. The external gamma dose rates ranged from 39 to 1039 nGy h 1. The mean external gamma dose rate was 222 191 nGy h 1. Small areas of relatively enhanced activity were located having external gamma dose rates of up to 1039 104 nGy h 1. ... ''Amang'' is a Malaysian term ...

CP Malaysia, shrimp processing plant in Port Klang started operations in mid-year 2004. We are an HACCP certified shrimp processing plant and currently our main export market is to the USA, E.U. and Japan. Our processing plant covers a total production area of 2,100 m2 comprising the conventional (raw) products and cooked products section.

 — A study was carried out to assess the radiological risk associated with amang processing and the accumulated effluent in the recycling ponds. Twenty-six sediment samples from the recycling ponds of two amang plants in the states of Selangor and Perak, Malaysia, were collected and analyzed.

The processing of amang, or tin tailings, for valuable minerals has been shown to technologically enhance NORM and this has stirred significant radiological safety and health concerns among Malaysia's regulatory authority. A growing radiological concern is now focused on the amang effluent containin …

 — Reduction in tin mining activity and the price of world's tin, had shifted the activity toward processing the tin by-product (tin tailing or amang) for other minerals (Ismail et al. 2003).Amang is ...

Twenty six sediment samples were collected from two different amang processing plants employing close water natural system. Sediment samples were collected in special PVC …

Amang or tin tailing is processed into concentrated ores and other economical valuable minerals such as monazite, zircon, xenotime, ilmenite etc. Besides that, the tailings from these ores may have a significant potential source of radiation exposure to amang plants' workers. This study was conducted to determine the elemental concentration of uranium …

 — 1.. IntroductionAn amang (tin tailing) processing plant located in Dengkil, Selangor, Malaysia has been in operation for more than 16 years. This plant, with an area of 40,000 m 2, consists of a processing plant building, open area used to heap unprocessed and semi-processed amang and a large pond providing water for use in the amang …

 — Sample locations were distant from any 'amang' processing plants. The external gamma dose rates ranged from 39 to 1039 ... "Amang" is a Malaysian term. It consists of group of heavy minerals which occur together with the tin ore recovered from the alluvium. The constituents of amang are monazite, ilmenite, zircon, xenotime, rutile and ...

The company has a State-of-the-Art Dry mineral processing plant producing over 50,000 MTs of heavies namely Garnet, Tin, Rutile, Zircon & Ilmenite per annum. The stockpiles are processed using world-class machineries …

The Malaysian Journa l of Analytical Sciences, Vol 11, No 1 (2007):314-323 314 ... Two amang processing plants, one each from the states of Selangor and Perak, Malaysia were chosen for this study. Both plants employ the recycle close water natural management system, i.e. the water is first ...

The wet separation plant is equipped with Cross Flow Separators from Eriez, USA, Spiral Gravity Concentrators from Mineral Technologies [MD], Australia & Wet Table from Holman, UK. The company also has a State-of-the-Art Dry mineral processing plant producing over 50,000 MTs of heavies namely Garnet, Tin, Rutile, Zircon & Ilmenite per annum.