Test Chamber Simulation Studies Confirm Respirator Effectiveness for Airborne Coal Dust

Post by:

A number of personal injury claims asserted that NIOSH-approved respirators worn by coal miners were tested using silica dust and therefore were not effective for miners exposed to airborne coal dust. The NIOSH method evaluated the performance of air-purifying respirators according to Title 30, Part 11 of the Code of Federal Regulations. A law firm […]

Read More

PVC Pipe Failure Results from Improper Installation

Post by:

Polyvinylchloride (PVC) is one of the most widely produced plastics in the world and accounts for approximately 70% of new buried water distribution and sanitary sewer pipes being installed in the U.S. and Canada today. With so much more PVC in use today, there are more situations in which pipes can fail. Whether caused by […]

Read More

Failure Analysis Determines Faulty Workmanship, Not Defective Building Materials, Caused Damage

Post by:

Defining the Challenge Upon completion of a high-rise residential structure, cracks and delamination appeared on exterior surfaces of the tower compelling building owners to initiate a lawsuit against the general contractor. The contractor, in turn, blamed faulty materials used by subcontractors. With so many subcontractors involved in this large construction project, it seemed an almost […]

Read More

Capacitor Testing Provides Data for Possible Patent Infringement

Post by:

RJ Lee Group received several de-mounted multi-layer ceramic SMT capacitors for examination. The devices were involved in a possible patent infringement case dealing with device design and the electrical properties of the insulator material. Three of the devices were selected for a survey by scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS) analysis. The […]

Read More

Did a Cracked Pipe Cause a Landslide?

Post by:

A landslide that released fly ash materials into a drainage stream causing environmental concern was attributed to a failed municipal water pipe. The section of pipe that was removed had been examined by others and specimens had been cut from it during the previous examinations. Once we were afforded access to these specimens, we performed […]

Read More

Product Failure Analysis: Consumer Product Affected by Inappropriate Raw Material

Post by:

Soon after roofing shingles were installed, the shingle manufacturer received complaints from numerous homeowners who observed rust-colored staining discharging from the shingles. The manufacturer replaced the shingles and began an investigation into the cause of the discoloration. Their in-house testing using an industry-standard method revealed the presence of corrosion-susceptible particles that were thought to be […]

Read More

Establishing the WTC Dust Signature: Managing Post 9/11 Environmental and Damage Assessments

Post by:

The collapse of the World Trade Center Towers following the catastrophic events of 9/11 produced a dust cloud that covered much of lower Manhattan. Thousands of private and public buildings were contaminated by the dust. Building owners in the vicinity of the collapse, worried about environmental impact to their damaged buildings, retained RJ Lee Group […]

Read More

Industrial Plants Can Face Costly Nuisance Dust Claims

Post by:

Industries whose production or manufacturing facilities emit particulate are subject to EPA and other regulatory standards. To meet these standards, industry carefully regularly monitors the amount of particulate produced and is concerned with any residue generated by their facilities. A citizens group (plaintiff) filed a lawsuit against an industry defendant claiming that nuisance particulate from […]

Read More