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Posts Tagged ‘contamination’


Maryland BRAC Updates Uncover Hidden Asbestos in Home Scheduled to be Razed

After construction crews began working on razing a home in Aberdeen, Maryland for Defense Base Closure and Realignment Commission (BRAC) related work unexpectedly stopped when dangerous asbestos was uncovered in the partially removed roof on Thursday. Immediately after the initial hole was made in the roof of the ranch-style home, crews suspected asbestos materials were present and quickly stopped all work until the material was assessed by a licensed asbestos contractor . A Maryland State Highway Administration (SHA) spokesperson Dave Buck said that the assessment and subsequent abatement of the asbestos should only halt the demolition for a few hours on Thursday. Asbestos, a known carcinogen or cancer-causing agent, is an incredibly versatile mineral prized for its durability and fire resistance. Before manufacturing with asbestos was banned in the United States due to its toxicity, many products, including building, plumbing and electrical materials, contained asbestos. Whenever asbestos is disturbed or destroyed, small particles contaminate the air. This contamination leads to asbestos exposure which can be deadly. Asbestos exposure is linked to lung cancer and mesothelioma , a rare form of cancer that affects the pleura or the protective lining around organs. The scope of the BRAC project in the Aberdeen area is comprehensive, including major updates to highway intersections and utilities, and will cost between $7 and $10 million per intersection. Work for the BRAC project officially began on Thursday morning, and the home found with asbestos was the first scheduled to be razed. Other homes, in critical conjunctions, are also on the list for demolition. Shocked homeowners were informed last summer that their house was among those properties targeted. According to the SHA, virtually all properties needed were purchased from the owners, save for two or three. Most of the purchased homes have already been vacated, with the remaining homeowners scheduled to move out later this month. SHA stresses that the homes acquired to make the necessary improvements to the intersections will not be demolished all at once. As the project progresses, so will the demolitions. It is unclear, however, what sort of environmental or potential toxic contamination analysis was done prior to the start of the demolition work. According to Buck, the demolition crew did not have knowledge of any asbestos at the location and that the asbestos was “in a place they couldn’t see.”

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Researcher reveals new way to safeguard forensic dna samples against contamination

DNA evidence is invisible and remarkably easy to transfer, making it possible for a sample to be spilled or even planted on a piece of evidence. Scientists have now developed a solution that permanently marks DNA samples to prevent contamination. Hampikian has used nullomers, the smallest DNA sequences that are absent from nature, to create the DNA bar code.

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Erroneous link between prostate cancer and retrovirus from mice confirmed: Contamination of XMRV in cancer tissue sample

A once-promising discovery linking prostate cancer to an obscure retrovirus derived from mice was the result of an inadvertent laboratory contamination, a forensic analysis of tissue samples and lab experiments — some dating back nearly a decade — has confirmed.

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Erroneous link between prostate cancer and retrovirus from mice confirmed: Contamination of XMRV in cancer tissue sample

A once-promising discovery linking prostate cancer to an obscure retrovirus derived from mice was the result of an inadvertent laboratory contamination, a forensic analysis of tissue samples and lab experiments — some dating back nearly a decade — has confirmed.

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Erroneous link between prostate cancer and retrovirus from mice confirmed: Contamination of XMRV in cancer tissue sample

A once-promising discovery linking prostate cancer to an obscure retrovirus derived from mice was the result of an inadvertent laboratory contamination, a forensic analysis of tissue samples and lab experiments — some dating back nearly a decade — has confirmed.

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Erroneous link between prostate cancer and retrovirus from mice confirmed: Contamination of XMRV in cancer tissue sample

A once-promising discovery linking prostate cancer to an obscure retrovirus derived from mice was the result of an inadvertent laboratory contamination, a forensic analysis of tissue samples and lab experiments — some dating back nearly a decade — has confirmed.

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Asbestos Refuse Allowed in ‘Special’ Landfills

For residents in Bradley County, Tennessee, a photograph raised some disturbing questions. The photograph, taken by an anonymous Bradley County resident and sent to the local newspaper, Cleveland Daily Banner , clearly shows asbestos being dumped at the Bradley County landfill . The Bradley County landfill, managed by Cleveland-based Santek Environmental , is allowed to accept and dispose of asbestos. According to Cheryl Dunson, a spokesperson for Santek Environmental, accepting asbestos is not only allowed at the site but also highly regulated by the state. The landfill also accepts asbestos from any person and from any site. However, unregulated dumping of asbestos is illegal and anyone in possession of asbestos must have been approved by the Tennessee Department of Environment and Conservation to both move the asbestos to the landfill and to dump it. Sanctioned by the state, the Bradley County landfill accepts friable and non-friable asbestos . Friable asbestos is less common today as it was in the heyday of the asbestos manufacturing boom. Asbestos , in the friable form, is the most deadly and dangerous to humans. These loose asbestos fibers are far easier to inhale than its counterpart, non-friable asbestos. With non-friable asbestos, the toxin is typically encased in another material such as cement where it keeps the asbestos in tact. The Bradley County landfill ensures that both the less frequent friable asbestos and non-friable asbestos are handled carefully and disposed of in a manner that eliminates contamination or health risks. Friable asbestos must be contained in bags prior to coming to the landfill. When it is known that asbestos is arriving, landfill employees dig a hole. Asbestos is not only a set of naturally occurring minerals but a known carcinogen causing a litany of cancers including malignant mesothelioma cancer , lung cancer and asbestosis. The Bradley County landfill is one of 19 landfills with “blanket approval” by the Tennessee Department of Environment and Conservation to accept friable asbestos.

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Misidentified and contaminated cell lines lead to faulty cancer science, experts say

Due to a high rate of contamination, misidentification and redundancy in widely available cell lines, researchers may be drawing faulty conclusions, experts say.

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How nanotechnology can help detect disease earlier

Researchers have discovered a new way to precisely detect a single chemical at extremely low concentrations and high contamination.

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Dietary cadmium may be linked with breast cancer risk

Dietary cadmium, a toxic metal widely dispersed in the environment and found in many farm fertilizers, may lead to an increased risk of breast cancer, according to a new study. Cadmium occurs at low concentrations naturally, but scientists are concerned because contamination of farmland mainly due to atmospheric deposition and use of fertilizers leads to higher uptake in plants. Consuming whole grains and vegetables may counteract the effects.

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