and the Revolving Credit Facility. All personal property assets, including, but not limited to accounts receivable, coal inventory and certain mining equipment are pledged to secure the Credit Agreement.
The Revolving Credit Facility has a maturity date of December 31, 2023 and bears interest based on LIBOR + 2.0% or Base Rate + 1.5%. Base Rate is the highest of (i) KeyBank’s prime rate, (ii) Federal Funds Effective Rate + 0.5%, or (iii) LIBOR + 2.0%. Advances under the Revolving Credit Facility are made initially as base rate loans, but may be converted to LIBOR rate loans at certain times at our discretion. At June 30, 2021, there was no amount outstanding under the Revolving Credit Facility and we had remaining availability of $30.0 million.
The Term Loan is secured under a Master Security Agreement with a pledge of certain underground and surface mining equipment, bears interest at LIBOR + 5.15% and is required to be repaid in monthly installments of $278 thousand including accrued interest. The outstanding principal balance under the Term Loan was $5.0 million at June 30, 2021.
The Credit Agreement contains usual and customary covenants including limitations on liens, additional indebtedness, investments, restricted payments, asset sales, mergers, affiliate transactions and other customary limitations, as well as financial covenants. At June 30, 2021, we were in compliance with all debt covenants under the Credit Agreement.
Equipment Financing Loan—On April 16, 2020, we entered into an equipment loan with Key Equipment Finance, a division of KeyBank, as lender, in the principal amount of approximately $4.7 million for the financing of existing underground and surface equipment. The equipment loan bears interest at 7.45% per annum and is payable in 36 monthly installments of $147 thousand. There is a 3% premium for prepayment of the note within the first 12 months. This premium declines by 1% during each successive 12-month period. The outstanding principal balance under the Equipment Financing Loan was $3.0 million at June 30, 2021.
SBA Paycheck Protection Program Loan— On April 20, 2020, we received proceeds from the PPP Loan in the amount of approximately $8.4 million from KeyBank, as lender, pursuant to the PPP of the CARES Act. The purpose of the PPP is to encourage the continued employment of workers. We used all of the PPP Loan proceeds for eligible payroll expenses, lease, interest and utility payments.
As of June 30, 2021, our application for forgiveness was approved by KeyBank. On July 29, 2021, we were notified by KeyBank that full forgiveness has been approved by the SBA. See Note 13 for more information.
9.00% Senior Unsecured Notes due 2026 – On July 13, 2021, we closed a public Offering of our 9.00% Senior Unsecured Notes due 2026 having an aggregate principal amount of $34.5 million (the “Notes”). The Notes mature on July 30, 2026, unless redeemed prior to maturity. The Notes bear interest at a rate of 9.00% per annum, payable quarterly in arrears on the 30th day of January, April, July and October of each year, commencing on July 30, 2021. We may redeem the Notes in whole or in part, at our option, at any time on or after July 30, 2023, or upon certain change of control events, at a redemption price equal to 100% of the principal amount plus accrued and unpaid interest to, but not including, the date of redemption.
We intend to use the net proceeds from the Offering for general corporate purposes, including funding future acquisitions and investments, making capital expenditures and funding working capital.