KOPPERS HOLDINGS INC. Exhibit 12.1

RATIO OF EARNINGS TO FIXED CHARGES

(Dollars in millions, except ratios)

	2004			2005			2006			2007			2008			Three months ended March 31, 2009
Earnings:
Income from continuing operations before taxes	$	16.2		$	18.2		$	18.6		$	79.5		$	90.0		$	8.2
Add: Fixed charges		47.0			59.7			69.4			55.5			52.9			13.0
Earnings as defined	$	63.2		$	77.9		$	88.0		$	135.0		$	142.9		$	21.2
Fixed charges:
Interest expensed	$	38.2		$	51.7		$	61.3		$	45.9		$	40.8		$	10.2
Interest capitalized		—			—			0.2			0.3			—			—
Rents		28.5			25.7			26.1			31.1			39.0			9.0
Interest factor		31	%		31	%		31	%		31	%		31	%		31	%
Estimated interest component of rent		8.8			8.0			8.1			9.6			12.1			2.8
Total fixed charges	$	47.0		$	59.7		$	69.6		$	55.8		$	52.9		$	13.0
Ratio of earnings to fixed charges		1.34			1.31			1.26			2.42			2.70			1.63
Preference dividends	$	77.5		$	29.0		$	—		$	—		$	—		$	—
Ratio of pre-tax income to net income		2.22			1.72			—			—			—			—
Preferred dividend factor	$	172.1		$	49.9		$	—		$	—		$	—		$	—
Ratio of earnings to combined fixed charges and preference dividends (1)		—			—			1.26			2.42			2.70			1.63

(1) Earnings were insufficient to cover combined fixed charges and preference dividends by $155.9 million in 2004 and $31.7 million in 2005.