His 'Square Deal' included regulation of railroad rates and pure foods and drugs; he saw it as a fair deal for both the average citizen and the businessmen. Sympathetic to both business and labor, Roosevelt avoided labor strife, most notably negotiating a settlement to the great Coal Strike of 1902. He vigorously promoted the conservation movement, emphasizing efficient use of natural resources. He dramatically expanded the system of national parks and national forests. After 1906, he moved to the left, attacking big business, proposing a welfare state, and supporting labor unions. Roosevelt appointed three associate justices of the Supreme Court. Roosevelt's first appointment, Oliver Wendell Holmes, Jr. had served as chief justice of the Massachusetts Supreme Court since 1899 and had earned notoriety within legal circles for his moral skepticism and deference to elected officials. Confirmed in December 1902, Holmes served on the Supreme Court until 1932.