Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The Cascades Proposal for the Deep Underground Science and Engineering
  Laboratory   One of the options for creating a Deep Underground Science and Engineering
Laboratory (DUSEL) is a site in the Mt. Stuart batholith, a granodiorite and
tonalite rock mass in the Cascade mountain range in Washington State. The
batholith's 100-year history in hard-rock tunneling includes the construction
of the longest and deepest tunnels in the U.S., the parallel Cascade and
Pioneer tunnels. The laboratory plan would utilize these two tunnels to produce
a laboratory that has many desirable features, including dedicated, clean,
horizontal access, container-module transport, and low operations costs.
Various aspects of the site help to reduce geotechnical, environmental, and
safety risks.

6
The categories of this paper are: astro-ph
4
The categories of this paper are: cond-mat
12
The categories of this paper are: nucl-th
27
The categories of this paper are: comp-gas
22
The categories of this paper are: chao-dyn
14
The categories of this paper are: math-ph
35
The categories of this paper are: mtrl-th
7
The categories of this paper are: hep-th
26
The categories of this paper are: bayes-an
33
The categories of this paper are: plasm-ph
34
The categories of this paper are: chem-ph
16
The categories of this paper are: stat
31
The categories of this paper are: ao-sci
28
The categories of this paper are: alg-geom
36
The categories of this paper are: cmp-lg
25
The categories of this paper are: patt-sol