UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
FORM N-Q
QUARTERLY SCHEDULE OF PORTFOLIO HOLDINGS OF REGISTERED
MANAGEMENT INVESTMENT COMPANY
Investment Company Act file number 811-07080
Name of Fund: BlackRock MuniYield Michigan Insured Fund, Inc.
Fund Address: P.O. Box 9011
Princeton, NJ 08543-9011
Name and address of agent for service: Robert C. Doll, Jr., Chief Executive
Officer (principal executive officer), BlackRock MuniYield Michigan
Insured Fund, Inc., 800 Scudders Mill Road, Plainsboro, NJ, 08536.
Mailing address: P.O. Box 9011, Princeton, NJ, 08543-9011
Registrant's telephone number, including area code: (800) 882-0052
Date of fiscal year end: 10/31/2007
Date of reporting period: 05/01/2007 - 07/31/2007
Item 1 - Schedule of Investments
BlackRock MuniYield Michigan Insured Fund, Inc.
Schedule of Investments as of July 31, 2007 (Unaudited) (in Thousands)
Face
Amount Municipal Bonds Value
Michigan - 139.8% $ 3,600 Adrian, Michigan, City School District, GO, 5% due 5/01/2014 (d)(e) $ 3,832
3,725 Bay City, Michigan, School District, School Building and Site, GO, 5% due
5/01/2031 (d) 3,875
1,000 Birmingham, Michigan, City School District, School Building and Site, GO, 5% due
11/01/2033 (d) 1,034
1,000 Central Montcalm, Michigan, Public Schools, GO, 5.90% due 5/01/2009 (b)(e) 1,036
1,500 Delta County, Michigan, Economic Development Corporation, Environmental Improvement
Revenue Refunding Bonds (Mead Westvaco-Escanaba), AMT, Series B, 6.45% due
4/15/2012 (e) 1,635
3,000 Detroit, Michigan, City School District, GO (School Building and Site Improvement),
Refunding, Series A, 5% due 5/01/2021 (d) 3,133
2,300 Detroit, Michigan, City School District, GO (School Building and Site Improvement),
Series A, 5.375% due 5/01/2013 (c)(e) 2,476
3,100 Detroit, Michigan, City School District, GO (School Building and Site Improvement),
Series B, 5% due 5/01/2028 (c) 3,173
1,025 Detroit, Michigan, Water Supply System Revenue Bonds, DRIVERS, Series 200, 5.75%
due 7/01/2011 (c)(e)(i) 1,181
1,550 Detroit, Michigan, Water Supply System Revenue Bonds, Second Lien, Series B, 5%
due 7/01/2013 (b)(e) 1,641
2,420 Detroit, Michigan, Water Supply System Revenue Bonds, Second Lien, Series B, 5%
due 7/01/2034 (b) 2,480
1,250 Detroit, Michigan, Water Supply System Revenue Bonds, Senior Lien, Series A, 5.875%
due 1/01/2010 (c)(e) 1,321
6,900 Detroit, Michigan, Water Supply System Revenue Bonds, Senior Lien, Series A, 5%
due 7/01/2034 (b) 7,070
11,790 Detroit, Michigan, Water Supply System Revenue Bonds, Series B, 5.25% due
7/01/2013 (b)(e) 12,636
1,415 Detroit, Michigan, Water Supply System, Revenue Refunding Bonds, 6.25% due
7/01/2012 (c)(h) 1,492
3,900 Dickinson County, Michigan, Economic Development Corporation, Environmental
Improvement Revenue Refunding Bonds (International Paper Company Project),
Series A, 5.75% due 6/01/2016 4,031
3,100 Dickinson County, Michigan, Healthcare System, Hospital Revenue Refunding Bonds,
5.80% due 11/01/2024 (g) 3,193
1,610 East Grand Rapids, Michigan, Public School District, GO, 5.75% due 5/01/2009 (d)(e) 1,664
Portfolio Abbreviations
To simplify the listings of BlackRock MuniYield Michigan Insured Fund, Inc.'s
portfolio holdings in the Schedule of Investments, we have abbreviated the
names of many of the securities according to the list below.
AMT Alternative Minimum Tax (subject to)
COP Certificates of Participation
DRIVERS Derivative Inverse Tax-Exempt Receipts
GO General Obligation Bonds
HDA Housing Development Authority
M/F Multi-Family
RIB Residual Interest Bonds
BlackRock MuniYield Michigan Insured Fund, Inc.
Schedule of Investments as of July 31, 2007 (Unaudited) (concluded) (in Thousands)
Face
Amount Municipal Bonds Value
Michigan $ 1,575 East Grand Rapids, Michigan, Public School District, GO, 5% due 5/01/2031 (d) $ 1,638
(concluded)
590 Eastern Michigan University, General Revenue Refunding Bonds, 6% due 6/01/2010 (a)(e) 630
435 Eastern Michigan University, General Revenue Refunding Bonds, 6% due 6/01/2020 (a) 462
1,500 Eastern Michigan University Revenue Bonds, Series B, 5.60% due 6/01/2010 (c)(e) 1,572
1,310 Eastern Michigan University Revenue Bonds, Series B, 5.625% due 6/01/2010 (c)(e) 1,374
2,425 Eaton Rapids, Michigan, Public Schools, School Building and Site, GO, 5% due
5/01/2014 (d)(e) 2,582
1,325 Eaton Rapids, Michigan, Public Schools, School Building and Site, GO, 5.25% due
5/01/2020 (d) 1,408
1,675 Eaton Rapids, Michigan, Public Schools, School Building and Site, GO, 5.25% due
5/01/2021 (d) 1,780
1,700 Eaton Rapids, Michigan, Public Schools, School Building and Site, GO, 5% due
5/01/2026 (d) 1,760
1,175 Eaton Rapids, Michigan, Public Schools, School Building and Site, GO, 5% due
5/01/2029 (d) 1,214
615 Flint, Michigan, Hospital Building Authority, Revenue Refunding Bonds (Hurley
Medical Center), Series A, 5.375% due 7/01/2020 (g) 623
1,375 Flint, Michigan, Hospital Building Authority, Revenue Refunding Bonds (Hurley
Medical Center), Series A, 6% due 7/01/2020 (g) 1,471
2,200 Fowlerville, Michigan, Community Schools, School District, GO, 5% due 5/01/2030 (c) 2,272
1,000 Frankenmuth, Michigan, School District, GO, 5.75% due 5/01/2010 (c)(e) 1,051
2,940 Gibraltar, Michigan, School District, GO (School Building and Site), 5% due
5/01/2014 (c)(e) 3,130
710 Gibraltar, Michigan, School District, GO (School Building and Site), 5% due
5/01/2028 (c) 734
1,100 Grand Blanc, Michigan, Community Schools, GO, 5.625% due 5/01/2020 (c) 1,169
1,035 Grand Rapids, Michigan, Building Authority Revenue Bonds, Series A, 5.50%
due 10/01/2012 (a)(e) 1,115
665 Grand Rapids, Michigan, Building Authority Revenue Bonds, Series A, 5.50% due
10/01/2019 (a) 710
900 Grand Rapids, Michigan, Building Authority Revenue Bonds, Series A, 5.50% due
10/01/2020 (a) 960
2,070 Grand Valley, Michigan, State University Revenue Bonds, 5.50% due 2/01/2018 (c) 2,257
11,250 Greater Detroit Resource Recovery Authority, Michigan, Revenue Refunding Bonds,
Series A, 6.25% due 12/13/2008 (a) 11,627
5,625 Gull Lake, Michigan, Community School District, School Building and Site, GO,
5% due 5/01/2014 (d)(e) 5,988
4,345 Harper Woods, Michigan, City School District, School Building and Site, GO,
Refunding, 5% due 5/01/2014 (c)(e) 4,626
430 Harper Woods, Michigan, City School District, School Building and Site, GO,
Refunding, 5% due 5/01/2034 (c) 443
9,325 Hartland, Michigan, Consolidated School District, GO, 6% due 5/01/2010 (c)(e) 9,857
3,990 Hudsonville, Michigan, Public Schools, School Building and Site, GO, 5% due
5/01/2029 (d) 4,121
1,575 Jenison, Michigan, Public Schools, School Building and Site, GO, 5.50% due
5/01/2019 (c) 1,673
4,000 Kent, Michigan, Hospital Finance Authority, Hospital Revenue Refunding Bonds
(Butterworth Hospital), Series A, 7.25% due 1/15/2013 (b) 4,341
3,000 Kent, Michigan, Hospital Finance Authority Revenue Bonds (Spectrum Health),
Series A, 5.50% due 7/15/2011 (b)(e) 3,202
1,000 Kent, Michigan, Hospital Finance Authority Revenue Bonds (Spectrum Health),
Series A, 5.50% due 7/15/2011 (e) 1,067
1,510 Lansing, Michigan, Building Authority, GO, Series A, 5.375% due 6/01/2013 (b)(e) 1,603
1,875 Michigan Higher Education Facilities Authority, Limited Obligation Revenue Bonds
(Hillsdale College Project), 5% due 3/01/2035 1,904
2,250 Michigan Higher Education Facilities Authority, Limited Obligation Revenue Refunding
Bonds (Hope College), Series A, 5.90% due 4/01/2032 2,345
1,235 Michigan Higher Education Facilities Authority, Revenue Refunding Bonds (College
for Creative Studies), 5.85% due 12/01/2022 1,299
1,145 Michigan Higher Education Facilities Authority, Revenue Refunding Bonds (College
for Creative Studies), 5.90% due 12/01/2027 1,202
2,500 Michigan Higher Education Student Loan Authority, Student Loan Revenue Bonds, AMT,
Series XVII-B, 5.40% due 6/01/2018 (a) 2,541
3,000 Michigan Higher Education Student Loan Authority, Student Loan Revenue Bonds, AMT,
Series XVII-Q, 5% due 3/01/2031 (a) 3,044
1,065 Michigan Municipal Bond Authority Revenue Bonds (Local Government Loan Program),
Group A, 5.50% due 11/01/2020 (a) 1,114
75 Michigan Municipal Bond Authority, Revenue Refunding Bonds (Local Government Loan
Program), Series A, 6.50% due 11/01/2012 (b) 75
1,000 Michigan Municipal Bond Authority, Revenue Refunding Bonds (Local Government Loan
Program), Series A, 6% due 12/01/2013 (c) 1,002
7,000 Michigan Municipal Bond Authority, Revenue Refunding Bonds (Local Government Loan
Program), Series A, 6.125% due 12/01/2018 (c) 7,015
2,500 Michigan State Building Authority, Revenue Refunding Bonds (Facilities Program),
Series I, 5.50% due 10/15/2018 (b) 2,643
3,500 Michigan State Building Authority, Revenue Refunding Bonds (Facilities Program),
Series II, 5% due 10/15/2029 (b) 3,614
2,500 Michigan State Building Authority, Revenue Refunding Bonds (Facilities Program),
Series II, 5% due 10/15/2033 (a) 2,595
1,250 Michigan State Building Authority, Revenue Refunding Bonds, RIB, Series 517X, 7.11%
due 10/15/2010 (d)(i) 1,396
3,000 Michigan State, COP, 5.50% due 6/01/2010 (a)(e) 3,133
3,000 Michigan State, COP, 5.40% due 6/01/2022 (a)(h)(l) 1,530
3,740 Michigan State, Comprehensive Transportation Revenue Refunding Bonds, 5% due
5/15/2026 (d) 3,905
1,000 Michigan State, HDA, Limited Obligation M/F Housing Revenue Bonds (Deaconess
Towers Apartments), AMT, 5.25% due 2/20/2048 (f) 1,003
4,050 Michigan State, HDA, Limited Obligation M/F Housing Revenue Bonds (Wiliams Pavilion
Apartments), AMT, 4.75% due 4/20/2037 (f) 3,840
835 Michigan State, HDA, Rental Housing Revenue Bonds, AMT, Series A, 5.30% due
10/01/2037 (b) 842
3,310 Michigan State, HDA, Rental Housing Revenue Bonds, AMT, Series D, 5% due 4/01/2026 (d) 3,318
2,530 Michigan State Hospital Finance Authority, Hospital Revenue Bonds (Mid-Michigan
Obligation Group), Series A, 5.50% due 4/15/2018 (a) 2,668
2,200 Michigan State Hospital Finance Authority, Hospital Revenue Refunding Bonds
(Crittenton Hospital), Series A, 5.625% due 3/01/2027 2,294
2,875 Michigan State Hospital Finance Authority, Hospital Revenue Refunding Bonds
(Oakwood Obligated Group), Series A, 5% due 7/15/2025 2,900
1,500 Michigan State Hospital Finance Authority, Hospital Revenue Refunding Bonds
(Oakwood Obligated Group), Series A, 5% due 7/15/2037 1,484
2,000 Michigan State Hospital Finance Authority, Hospital Revenue Refunding Bonds
(Sparrow Obligation Group), 5.625% due 11/15/2011 (e) 2,153
4,250 Michigan State Hospital Finance Authority, Hospital Revenue Refunding Bonds
(Sparrow Obligated Group), 5% due 11/15/2031 4,244
9,180 Michigan State Hospital Finance Authority Revenue Bonds (Mid-Michigan Obligor
Group), Series A, 5% due 4/15/2036 9,110
1,500 Michigan State Hospital Finance Authority Revenue Bonds (Trinity Health Credit
Group), Series A, 5% due 12/01/2031 1,511
2,715 Michigan State Hospital Finance Authority, Revenue Refunding Bonds (Ascension
Health Credit), Series A, 5.75% due 11/15/2009 (b)(e) 2,851
12,000 Michigan State Hospital Finance Authority, Revenue Refunding Bonds (Ascension
Health Credit), Series A, 6.125% due 11/15/2009 (b)(e) 12,696
2,500 Michigan State Hospital Finance Authority, Revenue Refunding Bonds (Ascension
Health Credit), Series A, 6.25% due 11/15/2009 (b)(e) 2,652
7,200 Michigan State Hospital Finance Authority, Revenue Refunding Bonds (Henry Ford
Health System), Series A, 5.25% due 11/15/2032 7,359
3,000 Michigan State Hospital Finance Authority, Revenue Refunding Bonds (Henry Ford
Health System), Series A, 5% due 11/15/2038 2,986
2,200 Michigan State Hospital Finance Authority, Revenue Refunding Bonds (Mercy Health
Services), Series X, 5.75% due 8/15/2009 (b)(e) 2,304
2,000 Michigan State Hospital Finance Authority, Revenue Refunding Bonds (Mercy Health
Services), Series X, 6% due 8/15/2009 (b)(e) 2,106
4,930 Michigan State Hospital Finance Authority, Revenue Refunding Bonds (Mercy-Mount
Clemens), Series A, 6% due 5/15/2009 (b)(e) 5,162
3,000 Michigan State Hospital Finance Authority, Revenue Refunding Bonds (Saint John
Hospital), Series A, 6% due 5/15/2013 (a)(h) 3,072
6,400 Michigan State Hospital Finance Authority, Revenue Refunding Bonds (Trinity Health),
Series A, 6% due 12/01/2027 (a) 6,829
1,000 Michigan State Hospital Finance Authority, Revenue Refunding Bonds (Trinity Health
Credit), Series C, 5.375% due 12/01/2023 1,047
5,255 Michigan State Hospital Finance Authority, Revenue Refunding Bonds (Trinity Health
Credit), Series C, 5.375% due 12/01/2030 5,483
3,100 Michigan State Hospital Finance Authority, Revenue Refunding Bonds (Trinity Health
Credit Group), Series D, 5% due 8/15/2034 3,116
10,250 Michigan State Strategic Fund, Limited Obligation Revenue Refunding Bonds (Detroit
Edison Company Pollution Control Project), AMT, Series A, 5.55% due 9/01/2029 (b) 10,672
6,000 Michigan State Strategic Fund, Limited Obligation Revenue Refunding Bonds (Detroit
Edison Company Pollution Control Project), Series AA, 6.95% due 5/01/2011 (c) 6,618
2,175 Michigan State Strategic Fund, Limited Obligation Revenue Refunding Bonds (Dow
Chemical Company Project), AMT, 5.50% due 12/01/2028 2,235
15,000 Monroe County, Michigan, Economic Development Corp., Limited Obligation Revenue
Refunding Bonds (Detroit Edison Co. Project), Series AA, 6.95% due 9/01/2022 (c) 19,141
1,000 Montrose Township, Michigan, School District, GO, 6.20% due 5/01/2017 (b) 1,157
1,830 Muskegon Heights, Michigan, Water System Revenue Bonds, Series A, 5.625%
due 11/01/2010 (b)(e) 1,931
235 Northview, Michigan, Public School District, GO, Refunding, 5.80% due 5/01/2021 (b) 237
1,100 Norway Vulcan, Michigan, Area Schools, GO, 5.90% due 5/01/2009 (c)(e) 1,141
500 Oak Park, Michigan, Street Improvement, GO, 5% due 5/01/2030 (b) 520
5,320 Orchard View, Michigan, Schools, School Building and Site, GO, 5% due 11/01/2013 (b)(e) 5,648
2,425 Oxford, Michigan, Area Community School District, GO, 5.50% due 11/01/2011 (d)(e) 2,583
1,370 Pennfield, Michigan, School District, School Building and Site, GO, 5% due
5/01/2014 (c)(e) 1,458
1,000 Plainwell, Michigan, Community Schools, School District, School Building and Site,
GO, 5.50% due 11/01/2012 (d)(e) 1,078
3,905 Plymouth-Canton, Michigan, Community School District, GO, 5% due 5/01/2029 (c) 4,033
700 Pontiac, Michigan, Tax Increment Finance Authority, Revenue Refunding Bonds
(Development Area Number 2), 5.625% due 6/01/2022 (g) 730
1,425 Reed, Michigan, City Public Schools, School Building and Site, GO, 5% due
5/01/2014 (d)(e) 1,517
1,500 Roseville, Michigan, School District, School Building and Site, GO, Refunding, 5%
due 5/01/2031 (d) 1,560
2,500 Saginaw, Michigan, Hospital Finance Authority, Revenue Refunding Bonds (Covenant
Medical Center), Series E, 5.625% due 7/01/2013 (b) 2,596
2,100 Saginaw Valley State University, Michigan, General Revenue Refunding Bonds, 5%
due 7/01/2024 (c) 2,185
1,445 Saginaw Valley State University, Michigan, General Revenue Refunding Bonds, 5%
due 7/01/2034 (c) 1,490
1,150 Saint Clair County, Michigan, Economic Revenue Refunding Bonds (Detroit Edison
Company), RIB, Series 282, 8.86% due 8/01/2024 (a)(i) 1,249
1,300 Southfield, Michigan, Library Building Authority, GO, 5.50% due 5/01/2010 (b)(e) 1,357
3,500 Southfield, Michigan, Public Schools, School Building and Site, GO, Series A, 5%
due 5/01/2014 (d)(e) 3,726
2,900 Southfield, Michigan, Public Schools, School Building and Site, GO, Series A,
5.25% due 5/01/2014 (d)(e) 3,130
1,325 Sparta, Michigan, Area Schools, School Building and Site, GO, 5% due 5/01/2014 (c)(e) 1,411
2,500 Thornapple Kellogg School District, Michigan, GO, Refunding, 5% due 5/01/2032 (b) 2,608
1,100 Waverly, Michigan, Community School, GO, 5.50% due 5/01/2010 (c)(e) 1,149
10,660 Wayne Charter County, Michigan, Airport Revenue Bonds (Detroit Metropolitan Wayne
County), AMT, Series A, 5.375% due 12/01/2015 (b) 10,917
1,750 Wayne Charter County, Michigan, Detroit Metropolitan Airport, GO, Airport Hotel,
Series A, 5% due 12/01/2030 (b) 1,805
9,160 Wayne County, Michigan, Airport Authority Revenue Bonds (Detroit Metropolitan
Wayne County Airport), AMT, 5% due 12/01/2034 (b) 9,316
1,710 West Bloomfield, Michigan, School District, GO, Refunding, 5.50% due 5/01/2017 (c) 1,817
1,225 West Bloomfield, Michigan, School District, GO, Refunding, 5.50% due 5/01/2018 (c) 1,301
2,405 West Branch-Rose City, Michigan, Area School District, GO, 5.50% due 5/01/2009 (c)(e) 2,475
1,600 Zeeland, Michigan, Public Schools, School Building and Site, GO, 5% due 5/01/2029 (b) 1,652
Puerto Rico - 6.2% 2,900 Puerto Rico Commonwealth Highway and Transportation Authority, Transportation
Revenue Refunding Bonds, Series K, 5% due 7/01/2015 (e) 3,113
8,900 Puerto Rico Commonwealth Highway and Transportation Authority, Transportation
Revenue Refunding Bonds, Series N, 5.25% due 7/01/2039 (c) 9,927
2 Puerto Rico Electric Power Authority, Power Revenue Bonds, Trust Receipts, Class R,
Series 16 HH, 7.503% due 7/01/2013 (d)(i) 3
2,790 Puerto Rico Municipal Finance Agency Revenue Bonds, Series A, 5% due 8/01/2027 (d) 2,873
1,000 Puerto Rico Public Finance Corporation, Commonwealth Appropriation Revenue Bonds,
Series E, 5.70% due 2/01/2010 (e) 1,045
Total Municipal Bonds (Cost - $381,470) - 146.0% 398,154
Municipal Bonds Held in Trust (m)
Michigan - 21.6% 6,700 Detroit, Michigan, Water Supply System, Senior Lien Revenue Bonds, Series A, 5.75%
due 7/01/2011 (c)(e) 7,209
4,750 Michigan State Building Authority, Revenue Refunding Bonds (Facilities Program),
Series I, 5.50% due 10/15/2010 (d) 5,028
15,030 Michigan State Building Authority, Revenue Refunding Bonds (Facilities Program),
Series I, 5.50% due 10/15/2011 (d) 15,910
15,500 Saint Clair County, Michigan, Economic Revenue Refunding Bonds (Detroit Edison Co.
Project), Series AA, 6.40% due 8/01/2024 (a) 16,164
7,525 Wayne County, Michigan, Airport Authority Revenue Bonds (Detroit Metropolitan Wayne
County Airport), AMT, 5.25% due 12/01/2025 (b) 7,879
6,295 Wayne County, Michigan, Airport Authority Revenue Bonds (Detroit Metropolitan Wayne
County Airport), AMT, 5.25% due 12/01/2026 (b) 6,591
Puerto Rico - 1.0% 2,535 Puerto Rico Electric Power Authority, Power Revenue Bonds, Series HH, 5.75%
due 7/01/2010 (d)(e) 2,694
Total Municipal Bonds Held in Trust (Cost - $61,629) - 22.6% 61,475
Shares
Held Short-Term Securities
483 CMA Michigan Municipal Money Fund, 3.03% (j)(k) 483
Total Short-Term Securities (Cost - $483) - 0.2% 483
Total Investments (Cost - $443,582*) - 168.8% 460,112
Other Assets Less Liabilities - 2.6% 7,107
Liability for Trust Certificates, Including Interest Expense Payable - (10.8%) (29,479)
Preferred Stock, at Redemption Value - (60.6%) (165,117)
----------
Net Assets Applicable to Common Stock - 100.0% $ 272,623
==========
* The cost and unrealized appreciation (depreciation) of investments
as of July 31, 2007, as computed for federal income tax purposes,
were as follows:
Aggregate cost $ 415,157
=====================
Gross unrealized appreciation $ 17,741
Gross unrealized depreciation (1,954)
---------------------
Net unrealized appreciation $ 15,787
=====================
(a) AMBAC Insured.
(b) MBIA Insured.
(c) FGIC Insured.
(d) FSA Insured.
(e) Prerefunded.
(f) GNMA Collateralized.
(g) ACA Insured.
(h) Escrowed to maturity.
(i) The rate disclosed is that currently in effect. This rate changes
periodically and inversely based upon prevailing market rates.
(j) Investments in companies considered to be an affiliate of the Fund,
for purposes of Section 2(a)(3) of the Investment Company Act of 1940,
were as follows:
Net Dividend
Affiliate Activity Income
CMA Michigan Municipal Money Fund (6,901) $101
(k) Represents the current yield as of July 31, 2007.
(l) Represents a zero coupon bond: the interest rate shown reflects the
effective yield at the time of purchase.
(m) Securities represent underlying bonds transferred to a separate
securitization trust established in a tender option bond transaction
in which the Fund may have acquired the residual interest certificates.
These securities serve as collateral in a financing transaction.
Item 2 - Controls and Procedures
2(a) - The registrant's principal executive and principal financial
officers or persons performing similar functions have concluded that
the registrant's disclosure controls and procedures (as defined in
Rule 30a-3(c) under the Investment Company Act of 1940, as amended
(the "1940 Act")) are effective as of a date within 90 days of the
filing of this report based on the evaluation of these controls and
procedures required by Rule 30a-3(b) under the 1940 Act and Rule
13a-15(b) under the Securities and Exchange Act of 1934, as amended.
2(b) - There were no changes in the registrant's internal control over
financial reporting (as defined in Rule 30a-3(d) under the 1940 Act
(17 CFR 270.30a-3(d)) that occurred during the registrant's last
fiscal quarter that have materially affected, or are reasonably
likely to materially affect, the registrant's internal control over
financial reporting.
Item 3 - Exhibits
Certifications - Attached hereto
Pursuant to the requirements of the Securities Exchange Act of 1934
and the Investment Company Act of 1940, the registrant has duly caused
this report to be signed on its behalf by the undersigned, thereunto
duly authorized.
BlackRock MuniYield Michigan Insured Fund, Inc.
By: /s/ Robert C. Doll, Jr.
------------------------
Robert C. Doll, Jr.,
Chief Executive Officer (principal executive officer) of
BlackRock MuniYield Michigan Insured Fund, Inc.
Date: September 20, 2007
Pursuant to the requirements of the Securities Exchange Act of 1934
and the Investment Company Act of 1940, this report has been signed
below by the following persons on behalf of the registrant and in the
capacities and on the dates indicated.
By: /s/ Robert C. Doll, Jr.
------------------------
Robert C. Doll, Jr.,
Chief Executive Officer (principal executive officer) of
BlackRock MuniYield Michigan Insured Fund, Inc.
Date: September 20, 2007
By: /s/ Donald C. Burke
--------------------
Donald C. Burke,
Chief Financial Officer (principal financial officer) of
BlackRock MuniYield Michigan Insured Fund, Inc.
Date: September 20, 2007