hot air blown through holes under the seats. The system was abandoned after two seasons due to the costs. The club also extended the open terrace at the Bee Hole End in 1970, with the aim of increasing its capacity to around 20,000. Lord hired Cambridge Soil Services to re-lay the pitch in 1974, and to install new drainage technology and under-soil heating. Neither came into operation; Lord found them uneconomical, partly because of a major rise in oil prices. The pitch was also raised and the slope that had existed was minimised. Lord then replaced the Brunshaw Road Stand with a single-tier stand named after himself, which was opened in the same year by former prime minister Edward Heath. The Bob Lord Stand could accommodate 2,500 supporters; it cost £450,000 (the equivalent of £ as of ), which was partly financed by Martin Dobson's transfer to Everton and caused some fans to dub it the "Martin Dobson Stand". In 1978, Scottish club Celtic visited Turf Moor for the Anglo-Scottish Cup quarter-final first leg match. The Celtic fans rioted and hurled bottles, stones and iron railings; 60 supporters were injured. Burnley won the game 1–0 and defeated the Scots 2–1 in the return leg; the team won 3–1 on aggregate and went on to win that year's cup final. A drop in home attendances combined with increased debt caused a rapid decline in the team's fortunes between the late 1970s and the early 1990s. Burnley were left with little money to invest in the stadium's redevelopment and safety work. In 1992, 17-year-old apprentice footballer Ben Lee was killed when he fell through the roof of the ageing Longside terrace as he tried to retrieve a football during training. The author Simon Inglis noted that the Longside "symbolised how far Turf Moor, once deemed to be so modern, had fallen behind". Conversion to all-seater Following the Hillsborough disaster in 1989, when a human crush on the terraces of the Hillsborough Stadium caused 97 fatalities, the Taylor Report was published in 1990. It proposed the introduction of all-seater stadiums in the top two divisions of English football by the start of the 1994–95 season. Burnley competed the 1994–95 season in the second tier, but were relegated to the third tier at the end of the year. As a result of their season at the second level, Burnley were granted £2.25 million (the