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Caterpillar Inc. manufactures and sells construction and mining equipment, off-highway diesel and natural gas engines, industrial gas turbines, and diesel-electric locomotives in worldwide. Its Construction Industries segment offers asphalt pavers, compactors, road reclaimers, forestry machines, cold planers, material handlers, track-type tractors, excavators, telehandlers, motor graders, and pipelayers; compact track, wheel, track-type, backhoe, and skid steer loaders; and related parts and tools. The company's Resource Industries segment provides electric rope and hydraulic shovels, draglines, rotary drills, hard rock vehicles, tractors, mining trucks, wheel loaders, off-highway and articulated trucks, wheel tractor scrapers and dozers, fleet management products, landfill and soil compactors, machinery components, autonomous ready vehicles and solutions, work tools, and safety services and mining performance solutions, as well as related parts and services. Its Energy & Transportation segment offers reciprocating engine powered generator sets; reciprocating engines, drivetrain, and integrated systems and solutions; turbines, centrifugal gas compressors, and related services; and diesel-electric locomotives and components, and other rail-related products. The company's Financial Products segment provides operating and finance leases, installment sale contracts, revolving charge accounts, repair/rebuild financing services, working capital loans, and wholesale financing; and insurance and risk management products and services. Its All Other Operating segment offers filters and fluids, undercarriage, ground engaging tools, fluid transfer products, precision seals, and rubber sealing and connecting components; parts distribution; logistics solutions and distribution services; brand management and marketing strategy services; and digital investments services. Caterpillar Inc. was founded in 1925 and is headquartered in Irving, Texas.

Canuc Resources Corporation, together with its subsidiaries, engages in the acquisition, exploration, development, and extraction of natural resources and precious metals in Canada, the United States, and Mexico. It explores for silver, lead, gold, copper, and zinc deposits. The company holds interest in the San Javier Project located in the state of Sonora, Mexico. The company was formerly known as Santa Rosa Silver Mining Corp. and changed its name to Canuc Resources Corporation in February 2017. Canuc Resources Corporation was founded in 1954 and is headquartered in Toronto, Canada.

Flexpoint Sensor Systems, Inc. designs, engineers, manufactures, and sells bend sensor technology and products using its patented Bend Sensor flexible potentiometer technology. The company's Bend Sensor technology is a flexible potentiometer bend sensor product consisting of a coated substrate, such as plastic that changes electrical conductivity as it is bent in a consistent manner. It provides automotive products; glove systems for medical, gaming, and virtual reality segments, as well as health rehabilitation, unmanned systems control, smartphone interaction, and professional training applications; emergency vehicles; swell sensors; and monitoring systems. The company also offers products for use medical devices, such as disposable colonoscopes and other medical devices; flow control and shoes applications; and other applications that include industrial control systems, medical equipment and instrumentation, computer peripherals, automotive transmission equipment, commercial vending equipment, and other devices. It sells its products to original equipment manufacturers, manufacturers, or distributors worldwide. The company was formerly known as Micropoint, Inc. and changed its name to Flexpoint Sensor Systems, Inc. in July 1999. Flexpoint Sensor Systems, Inc. was incorporated in 1992 and is based in West Jordan, Utah.

PowerShares Water Resources Portfolio (the Fund) seeks investment results that generally correspond to the price yield of the NASDAQ OMX US Water Index (the Underlying Index). The Fund generally will invest at least 90% of its total assets in common stocks that comprise the Underlying Index. The Underlying Index seeks to track the performance of the United States exchange-listed companies that create products designed to conserve and purify water for homes, businesses and industries. The Fund invests in the sector such, such as industrials, utilities, healthcare, information technology and materials. Its investment advisor is Invesco PowerShares Capital Management LLC.

US Nuclear Corp., together with its subsidiaries, engages in the developing, manufacturing, and selling radiation detection and measuring equipment worldwide. It operates through two segments, Optron and Overhoff. The company offers radiation water monitors that allow the detection of radioactive materials in drinking water, ground water, rainfall, rivers, and lakes; alpha, beta, gamma, and Tritium monitors; DroneRAD aerial radiation detection; air and water monitors; and nano-second X-ray monitors. It also provides vehicle, personnel, exit, and room monitors; radon air monitors and radon switch products to determine the radon content in the air in basements, mills, mines, and buildings; handheld survey meters, as well as personal dosimeters and pocket micro-R meters; and port security equipment. In addition, the company offers software, which measures gamma and neutron radiation levels; airborne radioactivity levels; temperature and humidity in the facility; status of security doors; wind speed and direction; and barometric pressure. Its products and services are used in nuclear reactor plants, universities, local and state hospitals, government agencies, and emergency medical technicians/first responders, as well as in airports, cargo, screening as ports and borders, and other critical infrastructure. US Nuclear Corp. has a strategic alliance with Arbok-Nuclear for the introduction of desalination and rad-wastewater treatment techniques. The company was incorporated in 2012 and is headquartered in Canoga Park, California.