second quarter of 2021 were 686,000 tons, up 89% from 362,000 tons in the second quarter of 2020. Cash margins on Company produced coal were $27 per ton in the second quarter of 2021, up 59% from the same period of 2020. Pricing of Company produced coal sold was $96 per ton, which was 5% higher in the second quarter of 2021 compared to the second quarter of 2020. Company produced cash mine costs were $69 per ton in the second quarter of 2021, which were 7% lower than the same period of 2020. Despite higher sales related costs, as well as modest inflationary pressures, cash mine costs at Elk Creek of $64 per ton in the second quarter of 2021 were 10% lower than the same period of 2020.
Sequential Quarter Comparison
Total sales volume of 686,000 tons in the second quarter of 2021 was up 62% from the first quarter of 2021. This was a quarterly record by 27%.
Cash margins on Company produced coal decreased by 10% from the first quarter of 2021, due to higher cash costs per ton in the second quarter of 2021. Cash mine costs on Company produced coal were $69 in the second quarter of 2021 per ton compared to $59 per ton in the first quarter of 2021. Higher second quarter of 2021 cash costs were in-line with our previous guidance, and were partially offset by 8% higher revenue per ton sold in the second quarter of 2021 relative to the first quarter of 2021.
Other income was $3.4 million in the second quarter of 2021 compared to $2.9 million in the first quarter of 2021, principally due to the recognition of $2.9 million in the second quarter of 2021 for the CARES Act Employee Retention Tax Credit. In the first quarter of 2021, the Company recognized $2.5 million for the CARES Act Employee Retention Tax Credit and does not expect to qualify for this credit in the second half of 2021.
Additional Financial Results
At June 30, 2021, the Company had record liquidity of $49.4 million, consisting of $19.4 million of cash on hand plus $30.0 million of availability under its revolving credit facility. At June 30, 2021, the Company had a net cash position of $6.0 million. This compared to a net debt position of $15.3 million as of March 31, 2021.
Capital expenditures for the second quarter of 2021 totaled $4.8 million, a decrease of 47% as compared to $9.1 million for the second quarter of 2020. This decrease was principally due to the completion of our plate press project at Elk Creek in the second quarter of 2020.
The Company’s effective tax rate for the second quarter of 2021 was 10%, excluding a tax benefit of $1.0 million for legislative changes in West Virginia, and a $0.2 million tax expense related to vested restricted stock awards. Ramaco expects to continue to pay minimal cash taxes for the foreseeable future due to tax loss carryforwards.
On July 13, 2021, the Company completed a $34.5 million senior unsecured notes offering. The 9.00% notes mature in July 2026. The net proceeds from the offering will be used for general corporate purposes, including funding future acquisitions and investments, making capital expenditures and funding working capital. The notes have been listed on the NASDAQ Global Select Market under the symbol “METCL”.
On July 16, 2021, the Company was awarded a $32.7 million jury verdict in its lawsuit related to the November 2018 silo failure against Chubb INA Holdings, Inc. (“Chubb Insurance”), which has not yet been paid and is subject to potential appeal and post-trial motions.
On July 29, 2021, the Company was informed that the SBA had forgiven an approximately $8.4 million PPP Loan which had been granted to the Company in 2020.