Expert consultancy in subsurface, vibrations and earthquakes. Who we are Cohere Consultant is founded in 2018 by Eliam Vlijm and Siefko Slob. We are an independent consultancy and provide high-level technical advice. Helping our clients reaching their objectives is what we enjoy. In our advice we look for coherence between our advice and the overall challenges of our customers. We see great added value working together with other specialists. What we do We are experienced project managers. As senior specialists within the areas of dynamics and subsurface we provide high-level technical advice. We make use of advanced data modeling and analysis tools. A quick understanding of problems based on much or few data is our strength. We carry out risk assessments and advice governments and authorities on policy and decision-making.