Articles

• May 2013 Presentation - American Gas Conference Presentation National Grid Core Strategy Saves Millions Per Year with Keyhole Technology.

• October 2011: Article - Safety Notice Utilicor Technologies Excavating in the vicinity of high voltage underground cables.

• September 2011: Article - APWA Reporter Agents of Change: How keyhole technology became a standard in the Valley of the Sun.

• September 2011: Article - Business Weekly, Northern Nevada Keyhole Technology Spurs Gas Project at Lake Tahoe.

• February 2011: Article - American Gas Magazine Working smarter with keyhole technology.

• February 2010: Article - Undergoing Construction Coring 101 - The basics of running a reliable keyhole program.

• June 2010: Article - Journal of Town and City Management A core strategy for effective and environmentally friendly utility cuts and repairs.

• April 2008: Newsletter - Gas Technology Institute NewsletterCity of Toronto Introduces Comprehensive Keyhole Standards.

• April 2007: Article - Underground Construction MagazineSeeing is Believing: The Case for Potholing.

• July 2006: Article - Trenchless Technology Keyhole Technology Paves the Way for Underground Repairs.

• July 2005: Article - Trenchless TechnologyKeyhole Technology: After 40 years, An Overnight Success.

• May 2005: Article - The Globe and MailThe Key to Painless Repairs for Toronto's City Streets.

• February 2005: Article- Pipeline Gas JournalInnovative Keyhole Technology Adds Savings to Atmos Energy's Business.

• September 2004: Article - Trenchless TechnologyyGas Contractor Robert B Somerville Gets to the Core of the Matter with New Keyhole Technology.

• April 2004: Article - Pipeline and Gas JournalKeyhole Coring Technology Cost Saving Solution For Underground Main Repairs.

• December 2003: Article - Underground Focus Core Patch is Stronger than Surrounding Pavement.

• December 2002: Article - Pipeline &Gas Journal Enbridge Gas Distribution Introduces New Technology for Improved Pavement Repairs with Keyhole Technology.