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                              November 9, 2021

       Glenn Sandgren
       Chief Executive Officer
       IKONICS Corp.
       4832 Grand Avenue
       Duluth, MN 55807

                                                        Re: IKONICS Corp.
                                                            Amendment No. 5 to
Registration Statement on Form S-4
                                                            Filed November 3,
2021
                                                            File No. 333-258335

       Dear Mr. Sandgren:

             We have reviewed your amended registration statement and have the
following
       comments. In some of our comments, we may ask you to provide us with
information so we
       may better understand your disclosure.

              Please respond to this letter by amending your registration
statement and providing the
       requested information. If you do not believe our comments apply to your
facts and
       circumstances or do not believe an amendment is appropriate, please tell
us why in your
       response.

              After reviewing any amendment to your registration statement and
the information you
       provide in response to these comments, we may have additional comments.
Unless we note
       otherwise, our references to prior comments are to comments in our
October 28, 2021 letter.

       Amendment No. 5 to Form S-4

       Talen Joint Venture, page 125

   1.                                                   Please revise to to
disclose whether the officers or directors, or major shareholders of
                                                        Ikonics or Terawulf
have any direct or indirect interests in Talen Energy Corporation
                                                        or Cumulus Coin LLC. To
the extent there are any interested parties, revise to clarify the
                                                        nature of the material
interest, and provide risk factor disclosure regarding the potential
                                                        conflict that may arise
from interested parties being involved in the joint venture.
 Glenn Sandgren
FirstName LastNameGlenn Sandgren
IKONICS Corp.
Comapany 9,
November  NameIKONICS
             2021        Corp.
November
Page 2    9, 2021 Page 2
FirstName LastName
       You may contact Morgan Youngwood, Senior Staff Accountant, at (202)
551-3479 or
Stephen Krikorian, Accounting Branch Chief, at (202) 551-3488 if you have
questions regarding
comments on the financial statements and related matters. Please contact
Matthew Derby, Staff
Attorney, at (202) 551-3334 or Jan Woo, Legal Branch Chief, at (202) 551-3453
with any other
questions.



                                                         Sincerely,

                                                         Division of
Corporation Finance
                                                         Office of Technology
cc:      W. Jason Deppen