Document:

EXHIBIT 10.2
                                                                    ------------

                            AMENDMENT NO. 6 TO LEASE

            THIS AMENDMENT NO. 6 TO LEASE (the "Sixth Amendment") is made and
entered into as of the 22nd day of April, 2002 between Landlord and Tenant named
below.

                        LANDLORD:          LONG WHARF DRIVE, LLC
                                           310 Orange Street
                                           New Haven, CT 06511

                        TENANT:            DSL.net, Inc.
                                           545 Long Wharf Drive
                                           New Haven, CT 06511

                        BUILDING:          545 Long Wharf Drive
                                           New Haven, CT 06511

            WHEREAS, Landlord and Tenant executed a lease dated as of January
29, 1999, as amended by that certain Amendment No. 1 to Lease dated as of June
9, 1999, that certain Amendment No. 2 to Lease dated as of November 9, 1999 (the
"Second Amendment"), that certain Amendment No. 3 to Lease dated as of January
20, 2000, that certain Amendment No. 4 to Lease dated as of February 8, 2000,
and that certain Amendment No. 5 to Lease dated as of November 12, 2001
(collectively, the "Lease"); and

            WHEREAS, by this Sixth Amendment, Tenant wishes to surrender 15,600
rentable square feet located on the ninth floor of the Building, which space is
the entire space identified in the Second Amendment as the "Ninth Floor Space";
and

            WHEREAS, Landlord and Tenant wish to execute an amendment of the
Lease stating, among other things, the new area of the Premises and Tenant's
adjusted Proportionate Share.

            NOW, THEREFORE, the parties to this Sixth Amendment, in
consideration of the covenants hereinafter contained and the sum of One Dollar
($1.00) to each party paid by the other, the receipt and sufficiency of which is
hereby acknowledged, do covenant and agree as follows:

            1. All capitalized terms used in this Sixth Amendment, but not
defined herein, shall have the same meanings ascribed thereto in the Lease.

            2. On or prior to 5:00 p.m. local time on April 30, 2002 (the
"Surrender Date"), Tenant shall vacate the Ninth Floor Space and surrender the
Ninth Floor Space in the condition required in the Lease.

            3. Landlord and Tenant hereby agree that upon Tenant complying with
its obligations set forth in Paragraph 2 hereof, (a) the Lease, with respect to
the Ninth Floor Space only, shall terminate and be of no further force or effect
as of May 1, 2002, and (b) as of May 1,

<PAGE>

                                      -2-

2002, Landlord and Tenant shall be released from any and all obligations under
the Lease with respect to the Ninth Floor Space, except those by which the
express terms of the Lease survive the expiration or termination thereof. Except
as otherwise set forth in the immediately preceding sentence, neither Landlord
nor Tenant shall have any rights, liabilities or obligations under the Lease
with respect to the Ninth Floor Space for the period accruing after the
Surrender Date.

            4. Commencing as of May 1, 2002, and continuing for the duration of
the Sixth Floor Term, as the same may be extended, Me paragraph entitled
"Tenant's Proportionate Share" in Paragraph 3 of the Lease, is hereby amended by
deleting the term "21.03%" and inserting the term "15.2%" in lieu thereof, which
percentage is obtained by dividing the number of rentable square feet in the
Premises (40,552) by the number of rentable square feet in the Building
(267,052).

            5. Effective as of May 1, 2002, Tenant's allocation of parking
spaces shall be reduced by an amount equal to 2.00 spaces for every 1,000
rentable square feet of the Ninth Floor Space, which, based on 15,600 rentable s
square feet, equates to a reduction of thirty-one (31) spaces.

            6. Each party represents to the other that it has not dealt with any
broker, agent or other intermediary who is or nay be entitled to be paid a
broker commission or finders fee in connection with this Sixth Amendment, except
Equis Corporation, whose fees shall be the sole responsibility of Landlord
pursuant to a separate agreement between Equis Corporation and Landlord. Each
party agrees to indemnify the other and hold it harmless from all liabilities
arising from breach of the representations stated above, The representations and
obligations contained in this Paragraph 6 shall survive the termination of the
Lease.

            7. Except as modified by this Sixth Amendment, the terms and
provisions of the Lease are hereby confirmed and ratified, and that instrument
shall remain in full force and effect as modified herein.

            IN WITNESS WHEREOF, Landlord and Tenant have signed this Sixth
Amendment as of the day and year first above written.

Signed,. Sealed, and Delivered               LANDLORD:
in the Presence of:                          LONG WHARF DRIVE, LLC

 /s/                                         By:  /s/ Joseph D. Buckman
------------------------------                   -------------------------------

 /s/                                         Its: Director-Transactions
------------------------------
                                             TENANT:
                                             DSL.net, Inc.

 /s/                                         By:  /s/ Robert J. De Santis
------------------------------                   -------------------------------

 /s/                                         Its: Authorized Signatory
------------------------------
<PAGE>

                                      -3-

STATE OF    Illinois                )
                                     ss.:
COUNTY OF   Cook                    )

            On this the 22nd day of April, 2002, before me Denise Johnson, the
undersigned officer, personally appeared Joseph D. Buckman, who acknowledged
himself/herself to be the Director-Transactions of Long Wharf Drive, LLC and
that he/she, as such and being authorized to do so, executed the foregoing
instrument for the purposes therein contained.

            IN WITNESS WHEREOF, I hereunto set my hand and official seal.

OFFICIAL SEAL                                /s/ Denise Johnson
                                             -----------------------------------
                                             Notary Public
                                             My Commission Expires: 3-4-2003

STATE OF    Connecticut )
                                                  ss.:
COUNTY OF   New Haven   )

On this the 12th day of April, 2002, before me Emily Robakiewicz the undersigned
officer, personally appeared Robert J. De Santis, who acknowledged
himself/herself to be the Chief Financial Officer of DSL.net, Inc., and that
he/she, as such CFO, being authorized to do so, executed the foregoing
instrument for the purposes therein contained.

            IN WITNESS WHEREOF, I hereunto set my hand and official seal.

                                             /s/ Emily Rbakiewicz
                                             -----------------------------------
                                             Notary Public
                                             My Commission Expires: 2/28/03mt10q10a

SECURITIES SUBSCRIPTION AGREEMENT

     THIS SECURITIES SUBSCRIPTION AGREEMENT, dated as of June 27th, 2002 ("Agreement"), is executed in reliance upon the exemption from registration afforded by Rule 506 promulgated under Regulation D by the Securities and Exchange Commission ("SEC"), under the Securities Act of 1933, as amended.  Capitalized terms used herein and not defined shall have the meanings given to them in Rule 506 and Regulation D.

     This Agreement has been executed and entered into by and between Gregory Bartko, Esq., 3475 Lenox Road, Suite 400, Atlanta, Georgia 30326 ("Buyer"), to purchase shares of the Class A preferred stock, par value $.001 per share (“Preferred Stock”), of Material Technologies, Inc., a corporation organized under the laws of Delaware, with executive offices 11661 San Vicente Boulevard, Suite 707, Los Angeles, California 90049  (the "Seller") at a purchase price of $1.00 per share, with the aggregate purchase price equaling $50,000.  Buyer hereby represents and warrants to, and agrees with Seller:

THE SECURITIES OFFERED HEREBY HAVE NOT BEEN AND WILL NOT BE REGISTERED WITH THE UNITED STATES SECURITIES AND EXCHANGE COMMISSION OR THE SECURITIES COMMISSION OF ANY STATE PURSUANT TO AN EXEMPTION FROM REGISTRATION PROVIDED BY SECTION 3(b) OF THE SECURITIES ACT OF 1933, AS AMENDED, AND THE RULES AND REGULATIONS PROMULGATED THEREUNDER (THE "1933 ACT"), AND RULE 506 OF REGULATION D PROMULGATED THEREUNDER.

THE SECURITIES PURCHASED UNDER THIS AGREEMENT WILL BEAR A RESTRICTIVE LEGEND REFLECTING THAT THE SHARES OF PREFERRED STOCK THAT ARE THE SUBJECT OF THIS AGREEMENT ARE “RESTRICTED SECURITIES” WITHIN THE DEFINITION OF REGULATION D OF THE 1933 ACT.

1.

Agreement to Subscribe; Purchase Price.

 (a)

Subscription.

The undersigned Buyer hereby subscribes for and agrees to purchase the Seller's Class A Preferred Stock, par value $.001 per share, in the amount of 50,000 shares at a price of $1.00 per share for a total aggregate purchase price of $50,000 (“Purchase Price”).

(b)

Payment.

The Purchase Price for the Preferred Stock shall be delivered to the Seller at the date of this Agreement, against the delivery to the Buyer of duly authorized shares of the Seller’s Preferred Stock, in the amount set forth above in Section 1(a) of this Agreement.

(c)

Closing.

Subject to the satisfaction of the conditions set forth in Sections 7, 8 and 11 below, the Closing of the transactions contemplated by this Agreement shall take place ("Closing Date" when (i) Seller delivers the Preferred Stock to the Buyer, (ii) Seller executes this Agreement and any transaction documents, including appropriate resolutions of its Board of Directors, and (iii) Buyer pays the Purchase Price for the Preferred Stock as shown in Section 1(a) of this Agreement.

2.

Buyer Representations and Covenants; Access to Information

In connection with the purchase and sale of the Preferred Stock, Buyer represents and warrants to, and covenants and agrees with Seller as follows:

(a)

Buyer is not, and on the closing date will not be, an affiliate of Seller;

(b)

Buyer is an "accredited investor" as defined in Rule 501 of Regulation D promulgated under the 1933 Act, and is purchasing the Preferred Stock for his own account and Buyer is qualified to purchase the Preferred Stock Shares under the laws of the State of California

(c)

All offers and sales of any of the Preferred Stock by Buyer shall be made in compliance with any applicable securities laws of any applicable jurisdiction and in accordance with Rule 506, as applicable, of Regulation D or pursuant to registration of securities under the 1933 Act or pursuant to an exemption from registration;

(d)

Buyer understand that the Preferred Stock is not registered under the 1933 Act and is being offered and sold to in reliance on specific exemptions from the registration requirements of Federal and State securities laws, and that Seller is relying upon the truth and accuracy of the representations, warranties, agreements, acknowledgments and understandings of Buyer set forth herein in order to determine the applicability of such exemptions and the suitability of Buyer to acquire the Preferred Stock;

(e)

Buyer shall comply with Rule 506 promulgated under Regulation D;

(f)

Buyer has the full right, power and authority to enter into this Agreement and to consummate the transaction contemplated herein.  This Agreement has been duly authorized, validly executed and delivered on behalf of Buyer and is a valid and binding agreement in accordance with its terms, subject to general principles of equity and to bankruptcy or other laws affecting the enforcement of creditors' rights generally;

(g)

As to any Buyer that is a corporations, the execution and delivery of this Agreement and the consummation of the purchase of the Preferred Stock and the transactions contemplated by this Agreement do not and will not conflict with or result in a breach by Buyer of any of the terms or provisions of, or constitute a default under, the articles of incorporation or by-laws (or similar constitutive documents) of Buyer or any indenture, mortgage, deed of trust, or other material agreement or instrument to which Buyer is a party or by which it or any of its properties or assets are bound, or any existing applicable law, rule or regulation of the United States or any State thereof or any applicable decree, judgment or order of any Federal or State court, Federal or State regulatory body, administrative agency or other United States governmental body having jurisdiction over Buyer or any of its properties or assets;

(h)

All invitations, offers and sales of or in respect of, any of the Preferred Stock, by Buyer and any distribution by Buyer of any documents relating to any invitation, offer or sale by them of any of the Preferred Stock will be in compliance with applicable laws and regulations, will be made in such a manner that no prospectus need be filed and no other filing need be made by Seller with any regulatory authority or stock exchange in any country or any political sub-division of any country, and Buyer will make no misrepresentations nor omissions of material fact in the invitation, offer or resale of the Preferred Stock;

(i)

The Buyer (or others for whom it is contracting hereunder) has been  advised to consult his own legal and tax advisors with respect to applicable resale restrictions and applicable tax considerations and he (or others for whom it is contracting hereunder) is solely responsible (and the Seller is not in any way responsible) for compliance with applicable resale restrictions and applicable tax legislation;

(j)

Buyer understands that no Federal or State or foreign government agency has passed on or made any recommendation or endorsement of the Preferred Stock;

(k)

Buyer has had an opportunity to receive and review all material information and financial data and to discuss with the officers of Seller, all matters relating to the securities, financial condition, operations and prospects of Seller and any questions raised by Buyer has been answered to Buyer's satisfaction.

(l)

Buyer acknowledges that the purchase of the Preferred Stock involves a high degree of risk.  Buyer has such knowledge and experience in financial and business matters that he is capable of evaluating the merits and risks of purchasing the Preferred Stock. Buyer understands that the Preferred Stock is not being registered under the 1933 Act, or under any state securities laws, and therefore Buyer must bear the economic risk of this investment for an indefinite period of time;

(m)

The Buyer is not a "10-percent Shareholder" (as defined in Section 871(h)(3)(B) of the U.S. Internal Revenue Code) of Seller; and

(n)

Buyer acknowledges and agrees that the transactions contemplated by this Agreement

have taken place solely and exclusively within the State of California.

3. Seller Representations and Covenants.

(a)

Seller is a corporation duly organized and validly existing under the laws of the State of Delaware and is in good standing under such laws with its principal executive office located in the State of California.  The Seller has all requisite corporate power and authority to own, lease and operate its properties and assets, and to carry on its business as presently conducted.  The Seller is qualified to do business as a foreign corporation in each jurisdiction in which the ownership of its property or the nature of its business requires such qualification, except where failure to so qualify would not have a material adverse effect on the Seller.

(b)

There are 200,000,000 shares of Seller’s Class A Common Stock, $.001 par value per share (“Class A Common Stock”) authorized and approximately 149,125,389 outstanding as of March 31, 2002; and there is 100,000 shares of Seller’s Class B Common Stock, $.001 par value per share (“Class B Common Stock”) authorized and 100,000 shares outstanding as of March 31, 2002; and there are 50,000,000 shares of Seller's Preferred Stock, $.001 par value per share ("Preferred Stock") authorized and approximately 337,471 shares outstanding as of that same date.  All issued and outstanding shares of our Common and Preferred Stock have been authorized and validly issued and are fully paid and non-assessable.  The Class A Preferred Stock shall be convertible, at the Buyer’s election, into a number of shares of Common Stock, calculated by multiplying the number of Shares of Class A Preferred Stock purchased by the Buyer by 2 (i.e. 100,000 shares). After conversion, the Seller shall deliver replacement Common Stock certificates to the Buyer within 10 business days after written notice of conversion is sent to the Seller’s address by the Buyer. Upon receipt of the Common Stock certificates after conversion, the Class A Preferred Stock shall be canceled on the stock transfer records maintained by the Seller’s stock transfer agent.

(c)

The execution and delivery of this Agreement do not, and the consummation of the transactions contemplated hereby will not, conflict with, or result in any violation of, or default (with or without notice or lapse of time, or both), or give rise to a right of termination, cancellation or acceleration of any obligation or to a loss of a material benefit, under, any provision of the Articles of Incorporation, and any amendments thereto, By-Laws, Stockholders Agreements and any amendments thereto of the Seller or any material mortgage, indenture, lease or other agreement or instrument, permit, concession, franchise, license, judgment, order, decree, statute, law ordinance, rule or regulation applicable to the Seller, its properties or assets.  There is no action, suit or proceeding pending, or to the knowledge of the Seller, threatened against the Seller, before any court or arbitrator or any government body, agency or official, which would have a material adverse affect on Seller's operations or financial condition.

 (d)

The Seller is subject to the reporting requirements of Sections 13 or 15(d) of the Securities and Exchange Act. The Preferred Stock when issued, will be issued in compliance with all applicable U.S. federal and state securities laws.  The execution and delivery by the Seller of this Agreement and the issuance of the Preferred Stock will not contravene or constitute a default under any provision of applicable law or regulation.  The Seller is in compliance with and conforms with, and will continue to comply with and conform with, all securities laws, state and federal, ordinances, rules, regulations, orders, restrictions and all other legal requirements of any domestic or foreign government or any instrumentality thereof having jurisdiction over the conduct of its businesses or the ownership of its properties, including but not limited to all laws concerning investor relations, public relations, disclosures under the securities laws and broker-dealers statutes and laws.

(e)

There is no material fact known to the Seller that has not been publicly disclosed by the Seller or disclosed in writing to the Buyer which could reasonably be expected to have a material adverse effect on the condition (financial or otherwise) or on the earnings, business affairs, properties or assets of the Seller, or could reasonably be expected to materially and adversely affect the ability of the Seller to perform its obligations pursuant to this Agreement.  The information furnished by the Seller to Buyer for purposes of or in connection with this Agreement or any transaction contemplated hereby does not contain any untrue statement of a material fact or omit to state a material fact necessary in order to make the statements contained therein, in light of the circumstances under which they are made, not misleading.

(f)

No consent, approval or authorization of or designation, declaration or filing with any governmental authority on the part of the Seller is required in connection with the valid execution and delivery of this Agreement, or the offer, sale or issuance of the Preferred Stock or Preferred Stock, or the consummation of any other transaction contemplated hereby, except the filing with the SEC and certain other states of a Form D Notice of Sale of Securities.

(g)

There is no action, proceeding or investigation pending, or to the Seller's knowledge, threatened, against the Seller which might result, either individually or in the aggregate, in any material adverse change in the business, prospects, conditions, affairs or operations of the Seller.  The Seller is not a party to or subject to the provisions of any order, writ, injunction, judgment or decree of any court or government agency or instrumentality.  There is no action, suit proceeding or investigation by the Seller currently pending or which the Seller intends to initiate.  The SEC has not issued any order suspending trading in the Seller's Preferred Stock and the Seller is not under investigation by the SEC or the National Association of Securities Dealers, and there are no proceedings pending or threatened before either regulatory body.

(h)

There are no other material outstanding debt or equity securities presently convertible into Preferred Stock.

(i)

The issuance, sale and delivery of the Preferred Stock has been duly authorized by all required corporate action on the part of the Seller, and when issued, sold and delivered in accordance with the terms hereof and thereof for the consideration expressed herein and therein, will be duly and validly issued, fully paid and non-assessable.  There are no pre-emptive rights of any shareholder of Seller.

(j)

This Agreement has been duly authorized, validly executed and delivered on behalf of Seller and is a valid and binding agreement in accordance with its terms, subject to general principles of equity and to bankruptcy or other laws affecting the enforcement of creditors' rights generally.  The Seller has all requisite right, power and authority to execute and deliver this Agreement and to consummate the transactions contemplated hereby.  All corporate action on the part of the Seller, its directors and shareholders necessary for the authorization, execution, delivery and performance of this Agreement and the Preferred Stock has been taken.  Upon their issuance to the Buyer, the Preferred Stock will be validly issued and non-assessable, and will be free of any liens or encumbrances.

(k)

Seller acknowledges and agrees that the transactions contemplated by this the Agreement have taken place solely and exclusively within the State of California.

4.

Exemption; Reliance on Representations.

Buyer understands that the offer and sale of the Securities are not being registered under the 1933 Act.  Seller and Buyer are relying on the rules governing offers and sales made pursuant to Rule 506 promulgated under Regulation D.  The offer and sale of the Shares are made solely within the State and jurisdiction of California.

5.

Delivery Instructions.

The Preferred Stock being purchased hereunder shall be delivered to the Buyer, and the Purchase Price, shall be delivered to the Seller.

6.

Conditions To Seller's Obligation To Sell.

Seller's obligation to sell the Preferred Stock is conditioned upon:

(a)

The receipt and acceptance by Seller of this Agreement as executed by Buyer.

(b)

All of the representations and warranties of the Buyer contained in this Agreement shall be true and correct on the Closing Date with the same force and effect as if made on and as of the Closing Date.  The Buyer shall have performed or complied with all agreements and satisfied all conditions on its part to be performed, complied with or satisfied at or prior to the Closing Date.

(c)

No order asserting that the transactions contemplated by this Agreement are subject to the registration requirements of the Act shall have been issued, and no proceedings for that purpose shall have been commenced or shall be pending or, to the knowledge of the Seller, be contemplated. No stop order suspending the sale of the Preferred Stock or Preferred Stock shall have been issued, and no proceedings for that purpose shall have been commenced or shall be pending or, to the knowledge of the Seller, be contemplated.

7.

Conditions To Buyer' Obligation To Purchase.

Buyer' obligation to purchase the Preferred Stock is conditioned upon:

(a)

The confirmation of receipt and acceptance by Seller of this Agreement as evidenced by execution of this Agreement by a duly authorized officer of Seller.

(b)

Delivery of the Preferred Stock to the Buyer.

8.

Miscellaneous.

(a)

Entire Agreement.

This Agreement, constitutes the entire agreement between the parties, and neither party shall be liable or bound to the other in any manner by any warranties, representations or covenants except as specifically set forth herein.  Any previous agreement among the parties related to the transactions described herein is superseded hereby.  The terms and conditions of this Agreement shall inure to the benefit of and be binding upon the restrictive successors and assigns of the parties hereto.  Nothing in this Agreement, express or implied, is intended to confer upon any party, other than the parties hereto, and their respective successors and assigns, any rights, remedies, obligations or liabilities under or by reason of this Agreement, except as expressly provided herein.

(b)

Survival.  All representations and warranties contained in this Agreement by Seller and Buyer shall survive the closing of the transactions contemplated by this Agreement.

(c)

Governing Law.

This Agreement shall be construed in accordance with the laws of California applicable to contracts made and wholly to be performed within the State of California and shall be binding upon the successors and assigns of each party hereto.  Buyer and Seller hereby mutually waive trial by jury and consent to exclusive jurisdiction and venue in the courts of the State of California.  At the Buyer’s sole election, any dispute between the parties may be arbitrated rather than litigated in the courts, before the arbitration board of the American Arbitration Association in Los Angeles, California and pursuant to its rules.  Upon demand made by the Buyer to the Seller, such Seller agrees to submit to and participate in such arbitration.  This Agreement may be executed in counterparts, and the facsimile transmission of an executed counterpart to this Agreement shall be effective as an original.

(d)

Seller Indemnification.  Seller agrees to indemnify and hold Buyer harmless from any and all claims, damages and liabilities arising from Seller's breach of its representations and/or covenants set forth herein.

(e)

Buyer’ Indemnification.  Buyer agrees to indemnify and hold Seller harmless from any and all claims, damages and liabilities arising from Buyer' breach of their representations and warranties set forth in this Agreement.

(f)

Form D.  If required, Seller shall filed a Form D with the Commission and all filings required by the applicable securities regulatory agencies upon the Closing of this transaction.

(g)

Notices.  All notices, requests, consents and other communications hereunder shall be in writing, shall be delivered by hand or sent by Fedex for next day delivery.  Each such notice or other communication shall for all purposes of Agreement be treated as effective or having been given when delivered, if delivered personally, or, if sent by overnight express mail service, 1 day after the same has been deposited with the Fedex.  All such notices must also be sent by facsimile on the same day to the parties as follows:

	If to Seller:	Material Technologies,Inc.
	 	11661 San Vicente Boulevard, Suite 707
	 	Los Angeles, California  90049
	 	Attn: Robert M. Bernstein, CEO and President
	 	Fax: 310-473-3177
	 	 
	If to Buyer:	See Page 1 of this Agreement

(i)

Counterparts.  This Agreement may be executed in one or more counterparts, each of which shall be deemed to be an original, but all of which together shall constitute one and the same instrument.

IN WITNESS WHEREOF, the undersigned has executed this Agreement as of the date first set forth above.

Official Signatory of Seller:

MATERIAL TECHNOLOGIES, INC.

	By: __________________________________________
	Title: President and Chief Executive Officer

Signatory of Buyer:

	By:
	Gregory Bartko, Esq.

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