Client South Dakota Science & Technology Authority

A Gold Mine of Research

Lead, South Dakota

The Compact Accelerator System for Performing Astrophysical Research (CASPAR) is a laboratory, converted from a former gold mine, housing a low power accelerator for the purpose of conducting deep earth physics research experiments. The underground location removes virtually all cosmic, or background, radiation. The experiments, run by the University of Notre Dame physics department, study low power nuclear reactions commonly found in most stars.

LEO A DALY and Dean Kurtz Construction have teamed to design and build out the CASPAR space, including survey, ground support, MEP systems, and neutron radiation shielding (to protect researchers).

The project also involves the design of an adjacent experiment space for Black Hills State University (BHSU) that includes class 10,000 and 1,000 clean rooms.

At a glance

4,500 SF


Deep earth physics laboratory

Class 10,000 clean room

Class 1,000 clean room


Architectural Design

Mechanical Engineering

Electrical Engineering

Plumbing Engineering