Table Data - Bituminous Coal, Number of Undercutting Machines in Use at the End of the Year for United States
| Title | Bituminous Coal, Number of Undercutting Machines in Use at the End of the Year for United States |
|---|---|
| Series ID | A01274USA155NNBR |
| Source | National Bureau of Economic Research |
| Release | NBER Macrohistory Database (Not a Press Release) |
| Seasonal Adjustment | Not Seasonally Adjusted |
| Frequency | Annual |
| Units | Number |
| Date Range | 1891-01-01 to 1944-01-01 |
| Last Updated | 2012-08-15 3:50 PM CDT |
| Notes |
| DATE | VALUE |
|---|---|
| 1891-01-01 | 545 |
| 1892-01-01 | . |
| 1893-01-01 | . |
| 1894-01-01 | . |
| 1895-01-01 | . |
| 1896-01-01 | 1446 |
| 1897-01-01 | 1956 |
| 1898-01-01 | 2622 |
| 1899-01-01 | 3125 |
| 1900-01-01 | 3907 |
| 1901-01-01 | 4341 |
| 1902-01-01 | 5418 |
| 1903-01-01 | 6658 |
| 1904-01-01 | 7663 |
| 1905-01-01 | 9184 |
| 1906-01-01 | 10212 |
| 1907-01-01 | 11144 |
| 1908-01-01 | 11569 |
| 1909-01-01 | 13049 |
| 1910-01-01 | 13254 |
| 1911-01-01 | 13829 |
| 1912-01-01 | 15298 |
| 1913-01-01 | 16379 |
| 1914-01-01 | 16507 |
| 1915-01-01 | 15692 |
| 1916-01-01 | 16198 |
| 1917-01-01 | 17235 |
| 1918-01-01 | 18463 |
| 1919-01-01 | 18959 |
| 1920-01-01 | 19103 |
| 1921-01-01 | 19618 |
| 1922-01-01 | 20436 |
| 1923-01-01 | 21229 |
| 1924-01-01 | 18660 |
| 1925-01-01 | 17551 |
| 1926-01-01 | 17466 |
| 1927-01-01 | 17388 |
| 1928-01-01 | 15261 |
| 1929-01-01 | 14731 |
| 1930-01-01 | 14237 |
| 1931-01-01 | 13216 |
| 1932-01-01 | 12017 |
| 1933-01-01 | 11845 |
| 1934-01-01 | 11905 |
| 1935-01-01 | 11881 |
| 1936-01-01 | 11974 |
| 1937-01-01 | 11392 |
| 1938-01-01 | 11810 |
| 1939-01-01 | 12227 |
| 1940-01-01 | 11950 |
| 1941-01-01 | 12608 |
| 1942-01-01 | 13049 |
| 1943-01-01 | 12924 |
| 1944-01-01 | 13305 |