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Energold Drilling Corp., together with its subsidiaries, provides drilling services primarily in Mexico, the Caribbean, rest of North America, Central America, South America, Europe, and Africa. The company operates through three segments: Minerals, Energy, and Manufacturing. It offers mineral drilling services, including surface and underground drilling, and conventional drilling services; and oil sands coring, shot hole seismic, and geothermal and geotechnical drilling services, as well as water well drilling services, such as mine pit de-watering, mine water supply, mine hydrogeological characterization and well monitoring, and rural and urban water well drilling schemes, as well as offers horizontal directional drilling services. The company also designs and manufactures customized mineral exploration multipurpose rigs for reverse-air-blast drilling, wireline coring, conventional coring, and reverse-circulation drilling; geothermal, geotechnical, and water well rig applications; tools and consumables; borehole logging equipment; and mud conditioning equipment. It operates a fleet of approximately 270 drill rigs. The company is headquartered in Vancouver, Canada.

GRI Bio, Inc., a clinical-stage biopharmaceutical company, focuses on treating inflammatory, fibrotic, and autoimmune diseases in the United States. Its product pipeline comprises GRI-0621, which is in phase II clinical development for the treatment of idiopathic pulmonary fibrosis; GRI-0803 which is in phase I trial for the treatment of systematic lupus erythematosus; GRI-0124, which is in pre-clinical development for the treatment of primary sclerosing cholangitis; and GRI-0729 in pre-clinical development. The company also develops ADAIR and ADMIR for treatment of attention -deficit/hyperactivity disorder. GRI Bio, Inc. was formerly known as Glycoregimmune, Inc. GRI Bio, Inc. was founded in 2009 and is based in LA Jolla, California.

The PowerShares Preferred Portfolio (Fund) is based on The BofA Merrill Lynch Core Fixed Rate Preferred Securities Index (Index). The Fund normally invest at least 90% of its total assets in securities that comprise the Index. The Index is designed to replicate the total return of a diversified group of investment-grade preferred securities. The Index is rebalanced on a monthly basis. The Fund seeks investment results that correspond generally to the price and yield (before fees and expenses) of a securities index. The Fund invests in sectors, such as basic materials, financial, utilities and unclassified. Invesco PowerShares Capital Management LLC. is the investment adviser.

Select Sands Corp., together with its subsidiaries, engages in quarrying and producing silica sand. The company holds interest in the Sandtown project located in northeast Arkansas, the United States. It sells its products to industrial and energy customers. The company was formerly known as La Ronge Gold Corp. and changed its name to Select Sands Corp. in November 2014. Select Sands Corp. was incorporated in 2006 and is based in Houston, Texas.