John Fulford 

John founded Turnstone in 1997 after travelling for years building zoo exhibits around the country. John enjoys researching  the geology and history of the features and ecosystems the company replicates, and building structures that will endure. The time he spends in the backcountry and his travels inform and inspire his work.

Paul Keller  Superintendent

Paul joined the Turnstone team in 1998 and has led projects ranging from zoo exhibits to both formal and natural water features. Paul has a strong and dynamic sense for natural stone placement, and he designs and builds complex mechanical systems to move water efficiently and with a subtle effect. He recently built the Asian Claw Footed Otter Exhibit at the Woodland Park Zoo's Bamboo Forest Reserve.

Erik McCormick  
Lead Artist/Superintendent

Along with being a  WABO certified structural steel welder, Erik is an expert in all vertical cement carving techniques. He leads an extremely talented crew of artists whose individual accomplishments are far too great to list here. Check out

Heidi Nellessen 
Office Manager

Heidi wears many hats at Turnstone. She is our main point of contact at the office, working on contracts and invoicing, insurance, safety, and beyond for our team and clients. She is a chef and loves the outdoors. In her spare time, you will find her whipping something up in the kitchen, running or hiking. You might also find her watching a movie with some cake and/or ice cream in hand as well.

Andrew Dornan  Landscape Architect

Andrew anchors the Turnstone design team, utilizing his training in Landscape Architecture to integrate Turnstone's work with each project's setting. He earned his Landscape Architecture degree from the University of Washington and has worked at several Landscape Architecture firms in the northwest since graduation in 1998. Andrew's love of plants and horticulture inspires his work. 

Neil Harrison  Superintendent

Neil has worked at Turnstone for over 16 years and previously traveled the world building with shotcrete. Specific project credits include the Oceanographic City of Arts and Sciences of Valencia, Spain and the Kuwait Scientific Center in Kuwait.  Neil more recently managed the Humboldt Penguin Exhibit at Seattle's Woodland Park Zoo, winner of the AZA Best Exhibit Award in 2010. He also drives the loudest and sweetest sounding truck of the Turnstone fleet.

Brandon Powell

Head of Operations

AKA "Ops"

Brandon has been living with shotcrete since the amazing day he was birthed from a ready-mix truck.  He has been flown around the world to work on concrete pumps and now he resides with Turnstone keeping our fleet of diesel motors running mean and clean.  

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The Turnstone crew is one of the most talented and professional groups of people you'll ever meet.