SCHEDULE 13G
UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, D.C. 20549
SCHEDULE 13G
(Rule13d-102)
UNDER THE SECURITIES EXCHANGE ACT OF 1934
(Amendment No. __)
HECLA MINING COMPANY
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(Name of Issuer)
Common Stock, $0.25 par value per share
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(Title of Class of Securities)
422704106
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(CUSIP Number)
December 31, 2006
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(Date of Event Which Requires Filing of This Statement)
Check the appropriate box to designate the rule pursuant to
which this Schedule is filed:
[x] Rule 13d-1(b)
[ ] Rule 13d-1(c)
[ ] Rule 13d-1(d)
*The remainder of this cover page shall be filled out for a
reporting person's initial filing on this form with respect to the
subject class of securities, and for any subsequent amendment
containing information which would alter the disclosures provided in a
prior cover page.
The information required in the remainder of this cover page
shall not be deemed to be "filed" for the purpose of Section 18 of the
Securities Exchange Act of 1934 ("Act") or otherwise subject to the
liabilities of that section of the Act but shall be subject to all
other provisions of the Act (however, see the Notes).
CUSIP 422704106 SCHEDULE 13G Page 2 of 5
1 Name of Reporting Person WENTWORTH, HAUSER & VIOLICH, INC.
IRS Identification No. of Above Person
2 Check the Appropriate Box if a member of a Group (a) [ ]
(b) [ ]
3 SEC USE ONLY
4 Citizenship or Place of Organization Washington, United States
NUMBER OF 5 Sole Voting Power 0
SHARES
BENEFICIALLY 6 Shared Voting Power 6,067,519
OWNED BY EACH
REPORTING 7 Sole Dispositive Power 0
PERSON WITH
8 Shared Dispositive Power 6,067,519
9 Aggregate Amount Beneficially Owned by Each Reporting
Person 6,067,519
10 Check Box if the Aggregate Amount in Row (9) Excludes
Certain Shares [ ]
11 Percent of Class Represented by Amount in Row 9 5.1%
12 Type of Reporting Person IA
CUSIP 422704106 SCHEDULE 13G Page 3 of 5
Item 1(a). Name of Issuer.
Hecla Mining Company
Item 1(b). Address of Issuer's Principal Executive Offices.
6500 Mineral Drive, Suite 200
Coeur d'Alene, ID 83815-9408
Item 2(a). Name of Person Filing.
Wentworth, Hauser & Violich, Inc. ("Wentworth")
Item 2(b). Address of Principal Business Office or, if none,
Residence.
353 Sacramento Street, Suite 600
San Francisco, CA 94111
Item 2(c). Citizenship.
Washington, United States
Item 2(d). Title of Class of Securities.
Common Stock, $0.25 par value per share
Item 2(e). CUSIP Number.
422704106
Item 3. Type of Reporting Person.
If this statement is filed pursuant to Rule 13d-1(b) or
Rule 13d-2(b) or (c), check whether the person filing is a:
(a) [ ] Broker or dealer registered under section 15 of the
Exchange Act.
(b) [ ] Bank as defined in section 3(a)(6) of the Exchange Act.
(c) [ ] Insurance company as defined in section 3(a)(19) of
the Exchange Act.
(d) [ ] Investment company registered under section 8 of the
Investment Company Act of 1940.
(e) [x] An investment adviser in accordance with Rule
13d-1(b)(1)(ii)(E);
CUSIP 422704106 SCHEDULE 13G Page 4 of 5
(f) [ ] An employee benefit plan or endowment fund in
accordance with Rule 13d-1(b)(1)(ii)(F);
(g) [ ] A parent holding company or control person in
accordance with Rule 13d-1(b)(1)(ii)(G);
(h) [ ] A savings association as defined in Section 3(b) of
the Federal Deposit Insurance Act;
(i) [ ] A church plan that is excluded from the definition of
an investment company under section 3(c)(14) of the Investment
Company Act of 1940;
(j) [ ] Group, in accordance with Rule 13d-1(b)(1)(ii)(J).
Item 4. Ownership.
Reference is hereby made to Items 5-9 and 11 of page 2 of this
Schedule 13G (this "Schedule"), which Items are incorporated by
reference herein.
Under the definition of "beneficial ownership" in Rule 13d-3
under the Securities Exchange Act of 1934, it is also possible
that the individual directors, executive officers, and/or
shareholders of Wentworth might be deemed the "beneficial
owners" of some or all of the securities to which this Schedule
relates in that they might be deemed to share the power to
direct the voting or disposition of such securities. Neither
the filing of this Schedule nor any of its contents shall be
deemed to constitute an admission that any of such individuals
is, for any purpose, the beneficial owner of any of the
securities to which this Schedule relates, and such beneficial
ownership is expressly disclaimed.
The calculation of percentage of beneficial ownership in item 11
of page 2 was derived from the Issuer's Form 10-Q filed with the
Securities and Exchange Commission on November 8, 2006, in which
the Issuer stated that the number of shares of its Common Stock,
$0.25 par value per share outstanding, as of November 7, 2006
was 119,516,124.
Item 5. Ownership of Five Percent or Less of a Class.
Not applicable.
Item 6. Ownership of More Than Five Percent on Behalf of Another Person.
Wentworth is deemed to be the beneficial owner of the number of
securities reflected in Items 5-9 and 11 of page 2 of this
Schedule pursuant to separate arrangements whereby Wentworth
acts as investment adviser to certain persons. Each person for
whom the reporting person acts as investment adviser has the
right to receive or the power to direct the receipt of dividends
from, or the proceeds from the sale of, the securities purchased
or held pursuant to such arrangements.
CUSIP 422704106 SCHEDULE 13G Page 5 of 5
Item 7. Identification and Classification of the Subsidiary Which
Acquired the Security Being Reported on by the Parent Holding
Company.
Not applicable.
Item 8. Identification and Classification of Members of the Group.
Not applicable.
Item 9. Notice of Dissolution of Group.
Not applicable.
Item 10. Certification.
By signing below I certify that, to the best of my knowledge and
belief, the securities referred to above were acquired and are
held in the ordinary course of business and were not acquired
and are not held for the purpose of or with the effect of
changing or influencing the control of the issuer of the
securities and were not acquired and are not held in connection
with or as a participant in any transaction having that purpose
or effect.
Signature
After reasonable inquiry and to the best of my knowledge and
belief, I certify that the information set forth in this statement is
true, complete and correct.
WENTWORTH, HAUSER & VIOLICH, INC.
By:/s/ Bradford Hall
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Bradford Hall,
Chief Compliance Officer
DATED: February 7, 2007