UNITED STATES SECURITIES & EXCHANGE COMMISSION Washington, D.C. 20549 Form 13F FORM 13F COVER PAGE Report for the Calendar Year or Quarter Ended: June 30, 2010 Check here if Amendment [ ];Amendment Number: This amendment (Check only one) : [ ] is a restatement [ ] adds new holdings entries. Institutional Investment Manager Filing this Report: Name: Petroleum & Resources Corporation Address: 7 St. Paul Street, Suite 1140 Baltimore, MD 21202 Form 13F File Number: 28-596 The institutional investment manager filing this report and the person by whom it is signed hereby represent that the person signing the report is authorized to submit it, that all information contained herein is true, correct and complete, and that it is understood that all required items, statements, schedules, lists, and tables are considered integral parts of this form. Person Signing this Report on Behalf of Reporting Manager: Name: Christine M. Sloan Title: Assistant Treasurer Phone: (410) 752-5900 Signature, Place, and Date of Signing: /s/ Christine M. Sloan Baltimore, MD July 27, 2010 [Signature] [City, State] [Date] Report Type (Check only one): [X] 13F HOLDINGS REPORT. (Check here if all holdings of this reporting manager are reported in this report). [ ] 13F NOTICE. (Check here if no holdings reported are in this report, and all holdings are reported by other reporting manager(s).) [ ] 13F COMBINATION REPORT. (Check here if a portion of the holdings for this reporting manager are reported in this report and a portion are reported by other reporting manager(s).) FORM 13F SUMMARY PAGE Report Summary: Number of Other Included Managers: 0 Form 13F Information Table Entry Total: 43 Form 13F Information Table Value Total: $537,679 (in thousands) List of Other Included Managers: Provide a numbered list of the name(s) and Form 13F file number(s) of all institutional investment managers with respect to which this report is filed, other than the manager filing this report. NONE. COLUMN 1 COLUMN 2 COLUMN 3 COLUMN 4 COLUMN 5 COLUMN 6 COLUMN 7 COLUMN 8 NAME OF ISSUER TITLE CUSIP VALUE SHRS OR SH/ PUT/ INVSTMT OTHER VOTING AUTHORITY OF CLASS (x $1000) PRN AMT PRN CALL DISCRETN MANAGER SOLE SHARED NONE AGL RESOURCES INC. COM 001204106 5,910 165,000 SH SOLE 165,000 ANADARKO PETROLEUM CORP. COM 032511107 10,827 300,000 SH SOLE 300,000 APACHE CORP. COM 037411105 16,838 200,000 SH SOLE 200,000 BAKER HUGHES, INC. COM 057224107 4,365 105,000 SH SOLE 105,000 CHEVRON CORP. COM 166764100 63,788 940,000 SH SOLE 940,000 CLIFFS NATURAL RESOURCES INC. COM 18683K101 6,555 139,000 SH SOLE 139,000 CONOCOPHILLIPS COM 20825C104 17,181 350,000 SH SOLE 350,000 CONSOL ENERGY INC. COM 20854P109 4,220 125,000 SH SOLE 125,000 DEVON ENERGY CORP. COM 25179M103 6,701 110,000 SH SOLE 110,000 DOW CHEMICAL CO. COM 260543103 7,609 320,800 SH SOLE 320,800 ENERGEN CORP. COM 29265N108 11,083 250,000 SH SOLE 250,000 EOG RESOURCES INC. COM 26875P101 11,804 120,000 SH SOLE 120,000 EQT CORP. COM 26884L109 10,842 300,000 SH SOLE 300,000 EXXON MOBIL CORP. COM 30231G102 72,389 1,268,430 SH SOLE 1,268,430 FOREST OIL CORP. COM 346091705 2,736 100,000 SH SOLE 100,000 FREEPORT-MCMORAN COPPER & GOLD COM 35671D857 16,261 275,000 SH SOLE 275,000 HALLIBURTON CO. COM 406216101 9,820 400,000 SH SOLE 400,000 HESS CORP. COM 42809H107 12,585 250,000 SH SOLE 250,000 INTERNATIONAL COAL GROUP COM 45928H106 11,550 3,000,000 SH SOLE 3,000,000 MASSEY ENERGY CO. COM 576206106 4,718 172,500 SH SOLE 172,500 MDU RESOURCES GROUP, INC. COM 552690109 6,761 375,000 SH SOLE 375,000 NABORS INDUSTRIES, LTD SHS G6359F103 9,162 520,000 SH SOLE 520,000 NATIONAL FUEL GAS CO. COM 636180101 9,176 200,000 SH SOLE 200,000 NATIONAL OILWELL VARCO COM 637071101 4,581 138,538 SH SOLE 138,538 NEW JERSEY RESOURCES CORP. COM 646025106 10,208 290,000 SH SOLE 290,000 NEWFIELD EXPLORATION CO. COM 651290108 2,443 50,000 SH SOLE 50,000 NOBLE CORP. SHS H5833N103 8,346 270,000 SH SOLE 270,000 NOBLE ENERGY INC. COM 655044105 15,686 260,000 SH SOLE 260,000 NORTHEAST UTILITIES COM 664397106 5,096 200,000 SH SOLE 200,000 OASIS PETROLEUM, INC. COM 674215108 2,900 200,000 SH SOLE 200,000 OCCIDENTAL PETROLEUM CORP. COM 674599105 30,374 393,700 SH SOLE 393,700 PIONEER NATURAL RESOURCES COM 723787107 8,323 140,000 SH SOLE 140,000 POTASH CORP. OF SASKATCHEWAN COM 73755L107 7,762 90,000 SH SOLE 90,000 PRAXAIR, INC. COM 74005P104 14,933 196,508 SH SOLE 196,508 QUESTAR CORP. COM 748356102 10,918 240,000 SH SOLE 240,000 ROYAL DUTCH SHELL PLC-ADR SPONS ADR A 780259206 16,206 322,700 SH SOLE 322,700 SCHLUMBERGER LTD. COM 806857108 26,287 475,000 SH SOLE 475,000 SOUTHWESTERN ENERGY COM 845467109 5,193 134,400 SH SOLE 134,400 SPECTRA ENERGY CORP. COM 847560109 4,191 208,812 SH SOLE 208,812 TOTAL S.A. SPONSORED ADR 89151E109 7,232 162,000 SH SOLE 162,000 TRANSOCEAN LTD. REG SHS H8817H100 11,951 257,953 SH SOLE 257,953 WEATHERFORD INT'L. LTD REG H27013103 3,942 300,000 SH SOLE 300,000 WILLIAMS COMPANIES, INC. COM 969457100 8,226 450,000 SH SOLE 450,000 537,679