Dave Mount

President & Partner

Dave has over 20 years in professional recruiting following a successful operating company career primarily with LL&E/ConocoPhillips in Oil & Gas and Oil Refining & Trading.  He was instrumental in growing the engineering niche of a regional recruiting firm, then forming OneSource Professional Search in 2003.  In addition to his leadership role, Dave has personally placed hundreds of productive long term employees for OneSource’s clients.  Dave earned his Bachelor’s degree in Finance from the University of New Orleans and attained his Certified Personnel Consultant (CPC) designation in 1998.  He is married, a proud father of two boys, and enjoys playing tennis and music.

Expertise: Oil & Gas, Energy Trading & Transportation, Engineering Services

Henry Shurlds

Partner & Vice President

Henry is a trusted & proven executive recruiter with over 25 years as a leader with Mobil Oil, Tulane University & Entergy Corporation. Earning a B.S. in Petroleum Engineering from Mississippi State & Tulane MBA, he joined OneSource in 2005, and is a key contributor to the firm’s significant growth & practice diversification. Henry is recognized as a high energy & results-driven search professional with solid integrity & extensive network of clients across multiple industries. Happily married with a son & daughter, he is deeply committed to family & dedicated to a healthy lifestyle. Henry enjoys building enduring relationships & competing in the hunt every day!

Expertise: Oil & Gas, Exploration & Production, Upstream Energy

Debra Casabat

Search Consultant
Expertise: Accounting, Finance

Debra has been building enduring relationships and successfully recruiting and placing experienced professionals since 1997. She comes to Onesource after investing the past 15 years with a regional search firm, where she successfully created and grew a professional search division. Additionally, she recruited, developed and managed highly effective teams of executive recruiters in both the New Orleans, LA and Houston, TX markets. Debra completed her MBA and a BS in Marketing from the University of New Orleans. She has also earned two national certifications, Certified Personnel Consultant (CPC) and the Certified Temporary Staffing Specialist (CTS). She enjoys cooking with her husband, spending time with family and friends, and supporting her children's school/travel teams.
Expertise: Accounting, Finance

Kate Wilhelm

Search Consultant
Expertise: Engineering & Automation

Kathryn “Kate” Wilhelm, PE brings 35 consecutive years of engineering, design and project/program management of multi-disciplined design teams including marketing and business development responsibilities to OneSource’s search consultant team. She is a Mechanical Engineer graduate of Wichita State University and a registered Professional Engineer in seven states. Kate leads the OneSource engineering, project/program management search practice for mid to senior level engineering talent and executive/operations managers. Her past roles from Design Engineer, Operations Manager to Vice President of Engineering uniquely allow her to recognize and attract top-tier talent while thoroughly understanding her clients’ needs. Beyond her work with OneSource, Kate enjoys spending time with her husband, her two daughters and their families, along with gardening and swimming. She is also a dedicated member of her church parish and active in their music ministry program.

Mike VanderVelde

Search Consultant
Expertise: Engineering & Automation

Mike’s area of practice will concentrate in the discipline of Automation and Engineering Services. His dynamic personality and competitive drive enables him to strategically place the optimal-fit/hard to find candidates with the right client partner.  Mike earned a Bachelor of Science at Hope College in Holland, MI with a focus in mathematics and social sciences. He then moved to Colorado where he earned a Master’s in Educational Leadership at Colorado State University.  He invested ten years as a professional educator including the last four as an administrator in the St. Tammany Parish (Louisiana) School System.   His experience as a seasoned listener, mediator, administrator and educator uniquely positions Mike to meet the needs of OneSource’s clients and candidates.

While away from the office, Mike enjoys spending time with his lovely wife and two children. During football season, Michael devotes weekends to his personal passion as an accomplished NCAA Division I Football Official (referee).  He enthusiastically looks forward to advancing his career as a professional recruiter through productive long-term placements and relationship building with OneSource’s amazing client partners, and candidates.

Karen Shannon

Search Consultant
Expertise: Chemicals & Midstream

Karen brings over 10 years of diverse experience in public relations and marketing to the OneSource team including roles in finance, industrial service, healthcare, advertising and event coordination. A very determined and driven professional, she always aspires to contribute at the highest levels while helping others exceed their professional and personal goals. As her family grew to include four beautiful daughters, Karen stepped away from the corporate world to become a full-time mom and took advantage of the “down time” to serve as youth minister of her church and substitute teach along the way. An LSU graduate with a BA in Marketing, Karen is an avid, lifetime fan of LSU athletics and enjoys spending free time with her family and friends cheering on the Tigers and her girls in their many activities.

George McMillan

Recruiting Associate

Came out of retirement to join Onesource in 2008 after a 31 year career with Amoco Production Company as a seismic processing specialist. George enjoys many tennis activities and currently serves as a director for the New Orleans Oilmen's Tennis Tournament. He is also an avid supporter of LSU athletics.

Kathy Mount


Earned her BS in Nursing from LSU and pursued a successful 18 year career in clinical nursing and supervision in various specialties including cardiac/intensive care, cardiac rehab, recovery room, elective surgery and endoscopy. Kathy elected to become a stay at home Mom several years ago and upon the forming of Onesource took on the challenge of managing the finances of Onesource. She has also been a key part of many non-profit organizations involving children and young adults with special needs. She enjoys tennis and mastering Sudoku or any other logic/math puzzles.